Server :: Sendmail To Split Single Envelope Into Multiple To - Addresses

Aug 4, 2010

Our system uses email to send fairly time-sensitive status messages between programs running on various servers on a WAN. Each email message is sent to two addresses (different servers). The problem occurs when one of the destination mail servers is off the network. I think because it's trying to send one email to two addresses, sendmail attempts delivery to the first address, then to the second address (i.e., serially). When this happens, it hangs for two connect timeout (CONNECT_TO) periods trying to connect to the offline destination, then after the timeout, it then delivers to the other destination. I'm trying to figure out how to work around that connection delay so it doesn't delay delivery to the other destination.

I'm working with the network guys to enable the right ICMP messages that signal when a network is unavailable, but I would also like to try having sendmail split the emails into two envelopes, then use parallel, independent connections for delivery.

After days of reading through the docs (O'Rielly Sendmail book + sendmail docs) I think one way to do this is to use multiple mail queues, but I can't decipher exactly how to do that from the docs.

There might be other, more elegant ways to do the same thing, but again, trying to decipher the docs has my head swimming. (This is my first experience with sendmail.)

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Ubuntu Networking :: Multiple External IP Addresses With Single Physical Ethernet Card And Virtualization

Feb 16, 2010

I recently installed Ubuntu Server 9.10 with the intent of using it as a platform for running a couple of Windows XP virtual machines along with Linux/Ubuntu.

I had no problems getting the server installed. Had no problems getting the network up and running so that I had access to both my internal network as well as external connectivity to the internet. Had no problems getting a VM installed and putting Windows XP inside of it. Had no problems setting up a bridge between the WinXP virtual machine and the physical ethernet card (eth0).

What Im having trouble with is figuring out how to bridge from multiple VMs AND Ubuntu natively through one physical ethernet card.

When I set up the bridge, it knocks out the static IP address of the ethernet card that was set up initially with Ubuntu when first installed before the VM was created and installed. Therefore, connectivity within Ubuntu natively is lost.

Similarly, am having trouble figuring out how the second VM (also going to be running WinXP) is going to get its connectivity since it doesnt seem to like me setting up 2 bridges to the same physical ethernet interface card.

I need all 3 machines to have static IP addresses and be visible/accessible from the external network for either web/mail/dns/etc servers on the Ubuntu side and for remote PC control functionality on the VM side.

I have tried setting up alias ethernet interfaces (eth0:1, eth0:2, eth0:3) with static addresses which work fine from native Ubuntu in presenting multiple IP addressees, but it seems that Im not permitted to bridge to these alias interfaces.

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Server :: Sendmail Adds MX Record To Addresses

Nov 1, 2010

Im working with virtuals machines to configure Sendmail on Linux.

I work with two domains (ar and org), the configuration is similar in both, so i will write just one.

In orgs mail server:

The emails stopped coming and the server adds to the e-mail addresses the MX record. For example, if i send an email to u1@org in log appears u1@org.mail.org.

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General :: Sendmail Options To Override Envelope Sender

Oct 8, 2010

I need to override envelope sender address from UserID@Servername.Domain to UserID@domain when sending mails from my Linux server.

1. currently if send a mail, it arrives as myuserid@linuxserver.domain.com instead of myuserid@domain.com.

2. Also, the mail is not being sent to other domains outside our comp network.

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Server :: Configuring Sendmail To Handle Addresses But Not The Whole Domain?

Mar 22, 2011

From my main Postfix SMTP heads, I am sending just a couple select emails (primarily support emails) off to a server that receives them and pipes them into the support software. So far this totally works perfectly and I am pretty happy with the configuration. However, in order for sendmail on the support server to receive those emails I have to place them in the virtusertable of course, but I also have to activate their domain in the local-host-names file. That then causes sendmail to consider itself as the destination server for that whole domain.Is there a way to make sendmail receive email for select addresses without making it think it's the server for the whole domain? This server is only receiving email from two specific smtp servers, so I wonder if I could just permit relaying? Wonder if that would just cause a giant loop though.

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Programming :: Connect Multiple Sockets From A Single Client To A Single Server And Keep Them Open?

Oct 13, 2010

I have question about the UNIX sockets. my goal is to connect multiple sockets from a single client to a single server and keep them open...I'm not sure if that is possible to create or not. Do you have any suggestion or an example of code?

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Server :: Make Sendmail Silently Discard 'Catchall' Addresses

Aug 4, 2011

Using sendmail, I am trying to setup a catchall address to silently discard spam mail sent to undefined users. I don't want to bounce a reply for "no user" as this often goes back to munged or innocent addresses.

I have a number of domains, so my virtuser table currently looks rather like this:

Code:

The last line is the "catchall" which is intended to ensure that any undefined users from either my_domain.com or my_domain.co.uk is forwarded to the non-existent "catchall" user account. Note that all mail sent to my_domain.com is passed across to my_domain.co.uk at the very start so all the following rules should apply to messages received at both domains. (Both of these domains appear in the

Being non-existent, I setup the following rules in the access data table:

Code:

This way, if I send an email to 'user1@my_domain.com' it is received and delivered to user1@my_domain.co.uk, but if I send an email to 'rubbish@my_domain.com' it *should* be received and silently discarded.

Unfortunately what actually happens is the server responds with:

Now, (just for testing), I made "catchall" an alias for the "postmaster" account and the mail was then received and delivered into the postmaster mailbox. So I know the virtuser rule is working. The account "catchall", however, is not being silently dropped as desired in either configuration.

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Server :: RHEL - Sendmail Delay In Connecting To SMTP For Some Addresses Only

Jun 4, 2010

Sendmail on the RHEL server is set up to forward email to company internal mail server (via SMART_HOST). This has worked fine for years.

From the server, doing a sendmail dave@company.com, the message is sent immediately. No problems - and no change here.

From the server, doing a sendmail roberto@compania.com (compania is the part of the company in Mexico) causes a 2m40s delay before sendmail does anything.

No packets are sent until after 2m40s wait. Message is always sent after the delay. It is not clear what the server is waiting for.

For *each* user in the @compania domain specified in sendmail command, an additional 2:40 is imposed before email is sent. Email is always sent after the n*2:40 sec delay.

Sending email to some_name@AnUnusedDomainNameThatDoesntExist.com is processed immediately - with a bounce email received in a couple of seconds.

Q: How do I determine where this 2m 40s delay is introduced?

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OpenSUSE Network :: Set Multiple IP Addresses Onto Server?

Jul 23, 2011

I want to set multiple IP addresses onto my server and I can then put under an alias.

But is it possible to somehow create a script in perl example that can do this for or is it only possible manually?

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Server :: Setting Up Postfix To Use Multiple IP Addresses?

Apr 17, 2011

I set-up his mail server for him with Postfix but what he wants I have no idea how to do.

Essentially he wants it so that the mail gateway IP corresponds with the dedicated IP of the domain and I have no idea how to accomplish this.

I found some documentation on the web saying that the fix for this was to run multiple instances of Postfix which I tried doing but each time I try to start the second instance I get the error that postfix is already running.

There has to be an elegant way to make this happen, I really hate to tell a client something can't be done even though the concept is a bit pointless, IMHO. I am hoping I can get some feedback here on if this can be done and if it can the easiest way for me to accomplish doing it.

Here is some of the config files (example.com has been put in place of the actual domain names and the ip of 5.5.5.5 is in place of the actual IPs


Code:
[root@youronlinehosting ~]# cat /etc/postfix/transport
example.com smtp:5.5.5.5
example.com smtp:5.5.5.6
example.com smtp:5.5.5.7

[Code].....

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Ubuntu Servers :: Setup An Outbound SMTP Mail Server With & Using Multiple IP Addresses

Mar 15, 2010

This is the current setup that we have: We have approx 20 clients who pay us to send out a type of e-mail called an E-Blast to their customers. We currently are using 5 Microsoft Windows Virtual Servers to do this. The problem is that those machines are starting to break down. There are times that it will take Microsoft Windows approx 9-10 hours to complete 1 job. This is way too long. We want to move away from Microsoft Windows for this particular type of job as it seems there are more customers who are wanting to use this type of advertising.

It seems that using a Linux Server "Command Line or Shell" environment would be the best way to go as there is no GUI like Windows. Since there is just text...that is something that would/should process very, very quickly.

I am in the process of setting up a new SMTP outbound mail server. This is the current software & configuration (what is installed on this new machine):

All of the customer data (Names, E-Mail Addresses, etc that these e-mails are going to) are currently loaded in a Microsoft SQL Database.

My machine that I am using is plugged into the DMZ. I have 1 ip address for the 1 network card. I have also added/bound 4 more ip addresses to that network card.

I have configured Postfix for Multiple IP Addresses.

I can, from the command line, send successful test e-mails and receive them in my personal account.

As far as I know everything is setup correctly. I can and will post requested information so that it can be verified that everything is setup correctly.

Here are a couple of my questions:

Ensure that I have my Network / Interfaces file and my Postfix's Master.cf/Main.cf files setup correctly?

How can I setup this server to be an Outbound SMTP server and get it to use all 5 of the IP Addresses to send these e-mails quickly?

What can I use to check and ensure that this server is in fact sending out emails on all 5 IP

Addresses (I heard that there is a program named "Postal" that may help in determing this).

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Server :: Sendmail To Multiple Recipient In Command ?

Jul 17, 2011

Through shell script iam sending mail, i want to send mail to multiple recipient,can any one help me how to send mail to multiple recipient.Iam sending mail through the below given in shell script to one recipient.

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Server :: IOPS On Multiple Server Single Mount Point System?

May 28, 2010

In my production setup, i have 3 servers using the same mount point. However, i see that the IOPS is low. Does this kind of architecture have any impact on IOPS. In case it is neutral, how can i tune my setup for better IOPS.

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Server :: Multiple IP Address On A Single NIC?

Jan 20, 2011

We can add multiple IP address on a single NIC. Is there any limitation that is how many ip address I can add on a single NIC card??

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Server :: Sendmail Is Sending Unnecessary Multiple Copies Of Emails From Php

Jan 7, 2010

I have a 64bit linux server with 5 virtual hosts on it. When someone fills out a contact form on one of the sites...I get 15-20 copies of the same email. At first I thought it was the kids clicking send multiple times because the first emails were coming from the children's ministry "Email The Cast" section. But then I started getting multiples from the adult sites too. All contact forms are set to come to me.

What's stranger is that my registration section for one of the sites uses the SAME php script (different file) to email me a notification that someone has registered but I only get 1 copy of that.

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Server :: Set Up Multiple Name Based SSL Hosts On A Single IP?

Feb 27, 2011

have a look at the following thread story and please clear my doubt.

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Server :: Multiple Folders To A Single Path

Mar 27, 2010

We have too many audio Paths, for each user have one. We would like to create a unique folder to Read in network.

For example:

The idea is Mapping all folders to the path /pub/Music in server, so all user can access all music online in the server.

Very Well. How we can do it?

And when pc1 and pc2 have the same subfolder, like Beatles, and in the subfolder have different folders ( PC1-Beatles/Revolver ) (PC2-Beatles/Habbey_Road) or The same folder (PC1-Beatles/The_Mistery_Magic_Tour) (PC3-Beatles/The_Mistery_Magic_Tour)...

Is there a way to contemplate this issue?

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Software :: Run Multiple X Server In Single Terminal?

Dec 10, 2010

How to run multiple X server in single terminal in linux .Is it possible .

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General :: Single Server And Multiple Client Programming In C ?

Jul 1, 2010

I am new in client server programming and i have written code for single server to single client communicating one port(3490). but i have no idea how my single server will be communicate with different client on different port.how this will be happen ?

Any idea to understand the logic or send any good link or any piece of code in c , i searched on net but all help was mostly for java progamming.

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Server :: Multiple Postfix Smtp For A Single Domain?

Mar 15, 2010

I am looking at setting up a multiple postfix SMTP servers for a single domain. Below is my requirement, I would appreciate if someone out there could guide me to achieve this using postfix..

1. Want to setup 2 postfix SMTP Server with 1 POP3 Server.

2. Server1 will host POP3 & SMTP services for domain "metallica.one".(IP: 1.1.1.1, MX: mx1.metallica.one)

3. Server2 will host only SMTP services for domain "metallica.one" (IP: 1.1.1.2, MX: mx2.metallica.one)

4. Server1 & Server2 will be used as load balancing for sending mails. (either manual settings in email client, or auto-loadbalancing is still preferred).

5. Mail received for domain metallica.one on Server2 should be pushed/forwarded/relayed to Server1 where POP3 services are running.

6. Outgoing mails for other domains from Server2 should be sent directly to the other-domain-recipients without relaying to Server1.

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Server :: Ownership For Multiple Groups To A Single Share?

Feb 4, 2010

I have configured a file server with samba and winbind in RHEL5.I am able to allot permission for the active directory groups to my Linux folder.No issues.But i want to set multiple groups of active directory to get ownership to a single directory. Say there are 3 groups a,b,c to have permissions to a folder of the Linux machine.

Code:

chown -R root:Active_directory_group_name path_to_linux directory

I have set

Code:

chmod 770 /myshare

meaning that user and group would have full rights to /myshare

Code:

chown root:a

works great I tried with the option of

Code:

chown -R --reference=/etc/shares_own.txt /myshare

In reference file(shares_own.txt) i gave the entry as

Code:

root:a,b,c

This is not working.

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Networking :: More Than One MAC Addresses On Single NIC?

Sep 25, 2010

My machine has ONE ethernet card and is on a LAN.IP address is assigned to hosts using DHCP.I can have more than one MAC address on LAN by running Virtual Machine and setting network to bridged. This way, my virtual machine simply acts like there is one more machine in the network.Running VMWare for this job is a a bit heavy on resources. Is there a way so that I can I can have 2 or more ip addresses with different MAC address on the same machine without having to run VirtualBox.

By googling, I think its related to bridging and tap. And, I am sure thatts NOT IP-ALIASING because in ip-aliasing both the ip addresses have the same MAC address.Basically, I want my system to have interfaces like:-eth0 - which was originally presentlo- thats always present :|newint0 - New interface with new MAC address and IP addresses which can access my LAN directly. Its like if I bind, let us suppose curl to this interface, its like a different connection

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Ubuntu Servers :: Running Multiple Websites On Single Server - VirtualHost

Aug 25, 2010

I currently am running 10.04.1 and have successfully setup my home web server to run a single website. My current settings are:

-I have registered the domain name annarrankings.com through godaddy
-A record is - host = @ and points to = 71.114.220.3
-CName is - host = www and points to = @
-on my server I have the site running in /var/www

I've done some research and found that to run multiple websites I need to setup VirtualHost.

-So I created a folder /var/www/annarrankings.com and moved my site to that folder

-Edited Apache2.conf to add the following line

-I then went to /etc/apache2/sites-enabled and copied the default file to a new file called annarrankings.com. Here's the annarrankings.com file after I edited it

-I then created a link in /etc/apache2/sites-enabled to the annarrankings.com file in /etc/apache2/sites-available

-Next I editied /etc/hosts

-When i went to enable the site using a2ensite annarrankings.com I got the following

I figured this was ok since I had already created a symbolic link earlier (a result of trying to following multiple tutorials and ..... videos at once) so I reloaded apache2. I created an index.html file in /var/www/ just for testing purposes and when I load www.annarrankings.com I get the file located in /var/www/ instead of the website located in /var/www/annarrankings.com Do I need to change my A record or CName in godaddy or did I just do this completely wrong?

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Networking :: Support 50K IPv6 Addresses On A Single Machine?

Feb 2, 2010

Does anyone know if there is any way to configure 50K "virtual" IPv6 addresses on loopback device in Linux?
The aim is not to add all 50K IPv6 addresses one by one on the loopback/ETH device which will probably mess up the ip table on the system. In IPv4, I am able to achieve that by specifying the IP address subnet on loopback device (e.g: "ip addr add 10.1.0.0/16 dev lo"). The same command does not seem to work the same way for IPv6. It only adds a single IPv6 address on loopback device and it automatically adds an "unreachable route" entry on the ipv6 route table for that IPv6 network prefix.

The reason I need this is because I am working on an application which tries to simulate 50K IPv6 addresses on a single Linux box. The kernel version I am currently using is RHEL 2.6.9.55.

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Ubuntu Multimedia :: Split Single Lossless Cuefile To Tracks (flac/wv/mp3/ape/ogg)?

Jan 8, 2011

found this today on my travels

Code:

########################################################################
## Split Lossless Audio by Cue File
## By CokiDVD
## Contains some code from:

[code]....

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Server :: Fetchmail On Zimbra Mail Server - Using 2 Envelope Options

Apr 25, 2011

Is it possible to using 2 envelope options on fetchmail? Here is fetchmailrc configuration :

envelope "Envelope-To"
envelope "X-Apparently-To"

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Ubuntu :: Split A Tar Archive Into Multiple Parts ?

Feb 11, 2010

Is there any way to split a tar archive into multiple parts?

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Ubuntu :: Split Multiple Images From One Image?

Mar 14, 2010

I have a couple of gigs of png files, each with 5-7 photos on each file. Currently I am making 5-7 duplicates of the file, then opening each one in gimp, and cropping and saving each one. kind of time consuming. Does anyone know of a program that will let me split an image into multiple slices?

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General :: Split A File Into Multiple Files Using AWK?

Aug 5, 2010

I have a file with 5 columns. Column 4 contains numbers.Is it possible to split the file into multiple files using a condition for the contents of column 4 i.e if column 4 contains a value between 0-10 then print the lines to a new file called less_than_10.txt

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Networking :: NAT With Multiple Internet Addresses

Mar 8, 2010

My Linux gateway has multiple address to internet:
eth0 = 76.148.200.3
eth0:0 = 76.148.200.4
eth0:1 = 76.148.200.5
and it's own gateway which is 76.148.200.2 (probably not relevant) and I also have which is not internet, but local:
eth0:2 = 192.168.0.1 netmask 255.255.255.0

They all work fine and tested. Now I am sharing the internet through eth0 (76.148.200.3) to 192.168.0.1/24 and that's working fine. The script I use to do that is here...

Code:
#!/bin/sh
echo 1 >/proc/sys/net/ipv4/ip_forward
echo 1 >/proc/sys/net/ipv4/ip_dynaddr
iptables -t nat --flush
iptables -A FORWARD -i eth0 -d 192.168.0.1/24 -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -s 192.168.0.1/24 -o eth0 -j ACCEPT
iptables -A FORWARD -j LOG
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Now all I want to change in the script is to share it through 76.148.200.4 (eth0:1) instead of what is already sharing through 76.148.200.3 (eth0). I am sure this is easy but can't work it out and iptables doesn't accept 'aliases'. How I can do this by modifying this script?

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