Server :: How To Control The MTA Delivery Rate
Jun 29, 2011
We're building an Email Marketing web site for internal staff who needs to send emails to thousands of customers.but we're wondering if it's possible to control the MTA delivery rate, such as:
1. for @xxxx.com, only allows 5 con-current smtp connections and 100 emails/minutes?
2. how to bind multiple IPs and send emails in round-robin mechanism?
3. how to pause (such as: 10ms) between every delivery?
if you are familiar with Ironport's product, you may already know what we want to achieve.
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Apr 15, 2009
Can anybody tell me what is rate control and rate control mode of operation (in data link layer) in an Ethernet interface?. Does it have anything to do with auto negotiation in Ethernet?
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Jul 2, 2010
I want to implement rate control over network interface. So I have configured Linux PC as a router with netem installed and having two interface cards.
device1----> Linux router with netem ---> device2
device1 connects to eth0 and device2 connects to eth1 of the Linux router. eth0 is configured to connect to the internet and eth1 has a static IP address on a local network. I want to limit bandwidth on devices connected to eth0.So I applied the below rules using tc and tbf.
tc qdisc add dev eth0 root handle 1: prio
tc qdisc add dev eth0 parent 1:3 handle 30: netem
tc qdisc add dev eth0 parent 30:1 tbf rate 256kbit buffer 1600 limit 3000
Will the above work or should I use htb instead. I want to simulate the network conditions using different bandwidths.
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Jul 12, 2011
I am having problem to collecting email from remote POP3 (all the emails for a domain is stored here) and distribute it after collecting to several users defined to Linux server. I have install postfix in Linux server for email distribution.
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Apr 13, 2011
I configured a Postfix Server to relay the messages to an Exchange Server. To keep it simple I configured all my users locally and I setup local .forward files in their home folders, specifying their local Exchange address.
Everything seemed to work fine (for years now), until I upgraded postfix in October, 23rd 2010.
Alas, lately I noticed that, since then, even if I just realized it now, sometimes the server seems not to use the .forward file and tries to use the local delivery using cyrus, which does not find a local mail folder (obviously, since I never created them as I didn�t want to) and replies to the sender with a "550-Mailbox unknown" error. Today I enabled the "-v" mode for "local" in master.cf the debugging the problem a bit better, to see what's the problem.
If I was sure about the problem being the postfix version (2.3.3, which is way too old now!), I'd give it a try and substitute it with the latest 2.8.2 (even if the server is a production server and is almost untouchable).
Following the error and my main.cf and master.cf setup files:
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Jul 6, 2011
The common wisdom seems to be to setup an SMTP server (say postfix) so that connections either coming from the same host or where the end delivery is local can do so without using any authentication mechanism.
This will for example allow fetchmail to deliver fetched mail locally on port 25 (without logging in) for any user.
However, what if I setup the SMTP server to force every incoming connection to be authenticated regardless if the end delivery is local or relayed and regardless where the connection comes from.
Is it possible to configure fetchmail to use a password when doing the local delivery?
(I haven't been able to find any such configuration options in fetchmail.)
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Aug 31, 2010
I am setting up an FC7 box to replace a currently dying server and I'm having an issue with the mail setup. I am using sendmail and dovecot and system users for credentials. I won't include all of their configurations, because that would get long, but I can copy and paste any sections if they are needed.
The problem is all mail is being delivered to the root mailbox in /var/spool/mail/. I setup a laptop on a local network with the server to test things. And just brought up Evolution with one of my test accounts. I was able to authenticate and tried to send a test email to myself. The email went out fine but did not come back in.
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May 24, 2010
I'm running postfix with virtual domains and want to modify the delivery path. Right now, I have one path for each user that's found with a database lookup.Before mail hits Postfix, it will have an x-spam-header: yes/no/uncertain field. When mail with x-spam-header: yes the lookup for the path would return /var/mail/domain/username/.Inbox/.spam.
What I think I'd like to do is parse the x-spam-header value in postfix, populate a variable, then use the variable to modify the path lookup in the database. header_checks has a FILTER option, but that's just beyond my skillset at the moment.Or, maybe I'm better off modifying the path with a procmail recipe? Currently, my mailbox_command = procmail -a "$EXTENSTION"
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Aug 20, 2009
I got a system with RHEL 5.3 Server with dovecot, sendmail, and thunderbird. I have found tons of stuff online about configuring a mail server, but little of it tells me how to get mail from a client to the server. I've tried to work with Postfix, Pine, Sendmail, Thunderbird, and the list goes on. I'm probably so confused now that I'm not even going to convey this properly, but let me try...... I got a system called wks90 which I decided would be my mail server. I installed dovecot, sendmail, and thunderbird. Then did some basic configuration via stuff I found online. Now the test, from the command line I use the simple "mail" command which succeeds. I bring up thunderbird and eureka!!! there is a message in /var/spool/mail/george.
Now here is where I get confused and things fall apart. I go to another system named wks50. I try some similar setup in sendmail trying to point it to wks90 as the server, I assumed dovecot was not needed, made and entry in /etc/aliases, and will use my thunderbird on wks90. So at the wks50 command line I mail -v to george@mydomain.priv. The message seems to work ok, but still goes to wks50's /var/spool/mail. How in the name of sanity do I get the mail to go to /var/spool/mail on wks90? OR somewhere that is centrally located. I tried to mount /var/spool/mail to wks50, but then wks50's mail to root started queueing up and going nowhere.
I guess I got the whole concept of mail wrong somewhere in my thinking. I just want the mail from any client to wind up at one server (wks90) and in a central location on wks90 so that any client like wks50, wks60, and wks70, using thunderbird, can read the mail from that central location. To me this sounds like I need to mount that central location to each client, but how do I then deal with the queuing root mail? Or is sounds like a need something like that old "movemail" command to take it and move it. I have another server that is the HOME server (server1). The physical location of all $HOMEs is here i.e. /home/george.
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Nov 11, 2010
send email i got bouncing error .see below error;
554 Your access to this mail system has been rejected due to the sending MTA's poor reputation. If you believe that this failure is in error, please contact the intended recipient via alternate means.
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Feb 9, 2011
i have a domain where i can send emails to any domain ,unfortunately i cant receive email from any domain . am getting the below error ;
T=remote_smtp: retry time not reached for any host after a long failure period
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Apr 30, 2011
Here is the senario...
2 round robin dns servers
x.x.x.1 mydomain.com (hostname)
x.x.x.2 mydomain.com (hostname)
My problem is that when I try and send an email that is part of the domain, it ends up trying to deliver it locally. I realize it is supposed to, but I don't want that for non-users of the server.
I want to be able to deliver certain emails []@mydomain.com remotely. (info@mydomain.com)
exim4 setup "internet site; mail is sent and received directly using SMTP". This works well as long as it is not an email from mydomain.com.
Is there a way to have exim check the users first and then deliver based on local user or not?
Next question. Is having the domain name as the hostname the best way to setup a round robin? (web server)
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Jan 18, 2011
I want to setup sendmail to alert for Nagios, OSSEC, redmine, ...
I configure sendmail to work with Gmail smtp follow this guide. I disable local delivery in sendmail by adding the following lines in sendmail.mc:
Code:
define(`MAIL_HUB', `xx.localdomain.')dnl
define(`LOCAL_RELAY', `xx.localdomain.')dnl
it works but this messages seems to be stuck in sendmail queue:
Code:
sendmail -bp
...
[Code].....
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Jun 9, 2010
The problem is to make sendmail use different LDA for diferent users in the same domain. For example, deliver bob@some.domain with procmail and genry@some.domain with mail.local.
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Aug 18, 2009
i am facing a problem with my mail server,i get an error when sending mail to a specific domain group;
Aug 18 06:41:02 mycompany2 sendmail[16745]: n7I1Ab9m016743: mail.xyz.in.: SMTP DATA-2 protocol error: 571 Delivery not authorized, message refused
Aug 18 06:41:02 mycompany2 sendmail[16745]: n7I1Ab9m016743: to=<feedback@xyz.in>, delay=00:00:25, xdelay=00:00:24, mailer=esmtp, pri=166397, relay=mail.xyz.in. [xxx.xxx.xxx.xxx], dsn=5.5.0, stat=Remote protocol error
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Apr 6, 2010
For some reason my mail server (Postfix) seems to have stopped delivering mail.
The error in the mail logs is "status=deferred (delivery temporarily suspended: connect to 127.0.0.1[127.0.0.1]: Connection refused) against all mails.
I have researched to try and find an answer, most information on this problem seems to point to a malfunction in the Anti Virus and Spam Filtering solution.
I have checked that Amavisd and Clamd are both operating and have restarted Postfix but all to no avail, squirrelmail is not working either.. ie not even producing a login page.
I have not changed anything in the config and am just wondering if anyone has experienced similar and could point me in the right direction of a solution.
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May 11, 2011
Iam using public ftp server,the server file transfer rate is very very slow & the server is also very slow,In which way can i check the server to make it fast,can any one give sugession on this.
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Mar 6, 2011
I have about 5 machines that are under Ddos daily and I use rate-limit for Iptables to protect that and it works good.My UDP ports 20100 to 20400 are actually under Ddos so these are the commands I use:
Code:
A INPUT -p udp -m udp --dport 20100:20500 -m state --state NEW -m recent --set --name DEFAULT --rsource
[code]....
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Nov 2, 2010
The /etc/inittab file is configured as the following.
Code:
# vi /etc/inittab
/sbin/getty -l /bin/login /dev/ttyS0 9600 vt100
It always makes the baud rate 9600.How can I make the baud rate be configured automatically according to the terminal's baud rate? Can I?
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Jan 4, 2010
Is it possible to have gnome's display settings recognise higher refresh rates than 56hz, as my nvidia is set to 85hz, but gnome display still thinks its 56hz, and I believe this is causing many programs I'm using to refresh at 56hz. Compiz works beautifully after overriding the refresh rate inside it, as it too thought I was using 56hz instead of 85 but many games aswell as CairoDock as jerky, which makes me think it is a refresh issue.
How can I make gnome know I'm using 85hz?
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Sep 30, 2010
I have a SSH server set up at home listening on port 22. I have hardened the server so it is pretty secure but I want to make it even safer by editing my iptables to rate-limit incoming connections and DROP false login attempts. I have tried these tutorials but I just cant get it to work:[URL]I want the debian-administration.org tutorial to work but when I try to add the first rule in terminal:sudo iptables -I INPUT -p tcp --dport 22 -i eth0 -m state --state NEW -m recent --setI get the following:Bad argument --set'I am new to iptables and I'm not sure if I'm doing something wrong when I try to set it up. I'm using Ubuntu 10.04.1 LTS with iptables v1.4.4.
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Jul 4, 2010
My friend bought an old hard drive. He noticed something with the hard drive that it was just replaced with a SATA socket. So meaning, the SATA socket was soldered to the PATA hard disk to replace the PATA socket to SATA socket to make it a SATA.
Now the question is:
1. Does the Transfer Rate of the harddisk (that has been replaced from PATA socket to SATA socket) would be SATA transfer rate? OR would still be PATA transfer rate?
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Sep 5, 2011
I have a script that sends short reports via the mailx command which is failing a lot lately.
Syntax used is basically: mailx -s "the subject" -r somebody@somewhere.com myemail@gmail.com < textfile.txt
For what ever reason this command has become very unreliable lately. I've tested on the command line and sometimes it works but frequently fails. The -r address seems to cause problems as it always fails with a -r set to my work address. I've read several theads and tried adding a .mailrc file but couldn't get past the NSS configuration setting. (Using my mozilla x123x.default dir results in Error initializing NSS: Security library: bad database. )
The nail command behaves about the same. what would make email sending so intermittent?
I've checked the /var/log/maillog but see each mail session end with the following and no errors reported:
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Aug 9, 2010
OMG, something went wrong with my email notifications in nagios. Just when i thought i have successfully set it up..Suddenly, just so suddenly it failed. x_x I got the mail below:
Code:
Delivery to the following recipient failed permanently:
root@server.com
Technical details of permanent failure:Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 #5.1.0 Address rejected root@server.com (state 14).
Received: by 10.114.109.1 with SMTP id h1mr16785732wac.203.1281263841711;
Sun, 08 Aug 2010 03:37:21 -0700 (PDT)
Return-Path: <layleng91@gmail.com>
Received: from ubuntu (bb119-74-182-12.singnet.com.sg [119.74.182.12])
[code]....
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Aug 12, 2009
Recently we are receiving lots of spam email specially ( Viagra). I want to use spamassassen to filter the spams so I need to configure procmail as local mail delivery agent.At the moment I am using prosfix for mail delivery agent and our server is Centos 5. I did google it but couldn't find a good instruction.
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Jun 15, 2011
I run a mailserver and this is bothering me quite abit. Being going on for about a month now. Running exim4 and dovecot with exim4u. This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
dsghjytyt@yahoo.com
retry time not reached for any host after a long failure period
This is a copy of the message, including all the headers.
Return-path: <andreas@servar.net>
Received: from ip-81-210-201-120.unitymediagroup.de ([81.210.201.120] helo=holly5)
by gwdebian.net with esmtpa (Exim 4.72)
(envelope-from <andreas@servar.net>)
id 1QWpUO-0000yy-ML
for dsghjytyt@yahoo.com; Wed, 15 Jun 2011 14:46:32 +0200
MIME-Version: 1.0
Date: Wed, 15 Jun 2011 14:44:16 +0200
X-Priority: 3 (Normal)
Content-Type: text/plain;
charset="iso-8859-1"
Subject: =?iso-8859-1?Q?lizzie_VIAGRA_=C2=AE_-61%_discount?=
Content-Transfer-Encoding: quoted-printable
From: andreas@servar.net
Reply-To: "RE: Your Recent Job" <Posting>
To: dsghjytyt@yahoo.com
X-Mailer: Microsoft Outlook Express 6.00.2900.2180
Message-ID: <CHILKAT-MID-3b7cf1d5-b3e7-3d78-5c1d-713c0e381cb9@holly5>
X-Antivirus: avast! (VPS 110615-0, 15.06.2011), Outbound message
X-Antivirus-Status: Clean
X-Scanned-By: unscanned primary on gwdebian.net (109.108.198.243); Wed, 15 Jun 2011 14:46:32 +0200
Then alot of random text
I run OSX on my everyday computer so this is not me sending out stuff since the above mail says Microsoft Outlook express has sent it (?) Running a Debian Squeeze server. And I really dont get any other spam due to exim4u setup and spamassasin.
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Jun 1, 2009
I have fedora running as our email server at work using sendmail. It used to have spamassassin and MailScanner installed, but one of those died over the weekend and killed the mail server. We do not need either of these as we are using a web based spam filter now (postini), so I tried removing these. I have discovered that the mail is in the mqueue waiting for delivery to the users mailboxes. I have tried using "sendmail -q -v":
Code:
Running /var/spool/mqueue/n51Jx6Gg023820 (sequence 1 of 1174)
<abaughman@grandproductsinc.com>... Connecting to local...
<abaughman@grandproductsinc.com>... Deferred: local mailer (/usr/bin/procmail) exited with EX_TEMPFAIL
Running /var/spool/mqueue/n51JsuRe023619 (sequence 2 of 1174)
<ksullivan@grandproductsinc.com>... Connecting to local...
<ksullivan@grandproductsinc.com>... Deferred: local mailer (/usr/bin/procmail) exited with EX_TEMPFAIL .....
I do not have a procmail config file: /etc/procmailrc. I am not sure why, or what it should be, perhaps that is the problem. I guess I don't exactly know how this server runs all that well. I was able to get it up and running but never understood it enough to now find what is not working correctly.
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Oct 30, 2009
I dont know why, but my postfix dont delivery local users, the virtual users works fine.
This is my main.cf:
When i try echo "Test" | mail -s Test root ; tail -f /var/log/maillog | grep "root" i see this error:
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Feb 11, 2010
My EeePC used to be called 'machine', but some time ago I renamed it 'deimos'. There's been no problem with this for ages; but today I got an email 'Delivery Status Notification (Failure)' - because of a failed job, Anacron had tried to send a message to 'root@machine'. I've checked /etc/hosts and /etc/hostname, and in both locations the computer's name is correctly configured as 'deimos'. Where else should I look?
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Sep 18, 2010
How do I write a procmail recipe that executes a shell script without affecting delivery?(in this case, something that sends me a DM via Twitter) I don't want to affect further processing of the message - it should continue on its way and the output of the script should be ignored.
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