if i am having say 10 number of linux machine over the network and want to setup password free SSH in round robin fashion means ssh from any machine to either machine. one way to do is generate the public key on every machine and put on other machine. is there any other shorter and simple way to do it?
Does anyone know how to run 2 threads with round robin scheduling. & can we get the time of these threads when they are context switching. That means I want to know at how much time each thread is taking to run
I'm trying to configure my Red Hat server to use port bonding for two interfaces going to a switch, and I followed this redhat guide [URL]...-redhat-server but when I attempt to bring the bond up, it simply uses mode 0 (round robin) instead of mode 1, which I specifically configured in /etc/modprobe.conf by doing
Code: options bond0 mode=1
Any ideas why the bond would continue to use round robin when I set it to active-backup?
So we have DNS round robin set up for 4 servers. If we ping dns name (basically an alias) server_connect it resolves with different IP address in round robin format. I.E. x.x.x.1 x.x.x.2 for the 4 different server IP addresses. When we do nslookup server_connect it will come back first time as server1_connect server2_connect through server4_connect so the server is able to resolve through ping and nslookup resolving the initial dns name (alias) to the dns name associated in the round robin. Problem is when we try to connect with http or telnet it comes back host unrecognized. I can put one of the 4 round robin servers in /etc/hosts and it connects fine so I'm thinking that either one of three things. 1) ttl 2) It does double connection first to identify itself to the round robin server and then handshake but second time it hits for the handshake the IP and dns name is different than what it expected so it fails. 3) Since we are trying to telnet to dns alias and it is returning different dns name it fails.
2 and 3 seem most promising but now I'm at a stand still.Anyone else come across this issue and if so how did you resolve.
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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.
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"
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 firstname.lastname@example.org. 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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my postfix to send and recive external emails, but many recive in trash folder.Other programer say me that is need some configurations in postfix with and dovecot to work, but i dont know what!This is my first time configuring a linux server at this week.
my main.conf sample_directory = /usr/share/doc/postfix-2.3.3/samples readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
I come back to everybody cause I don't find an explicit how to do this!In our internal network, I've created an email server with Postfix and Dovecot. (Just for internal domain, no needed to go outside)
But I've some server which use linux too. All are on CentOS 5.5.I would like to configure these servers to use my internal mail server for send email, and not configure sendmail or postfix on each server.
What I've to do exactly on each servers to use it? I search on the web but I don't find something very explicit
We have one major problem in our dedicated online mail server. In this mail server both sendmail and qmail running for send and receive mails. In this server I can able to send mail to other domain like Gmail and yahoo its works fine. But I am not receiving any mails from other domains. And automatically I got telnet localhost 25 connections refused error. When I send mail from my webmail I got like this error Connection refused Server replied: 111 can't open SMTP stream. This is I got when I send mail from webmail. I am using centos 5.2 version.
Installing PHPMailer v.5 (server running php5) with SMTP function. I have installed the main files in mail directory such as: # class.phpmailer.php: This is the main class file which contains the various email functions.# class.smtp.php: This additional class allows SMTP authentication.I don't think I need class.pop3.php as I'm sending mails server side (smtp)and should be accepted by most IP's pop3 servers.
All my mail functions work great with SMTP and I can send and receive. My problem is that my recipients only receive mail from admin@domain instead of "My Website Name" Sounds simple enough, I know and I have made adjustments to class.phpmailer.php and have inserted my specific mail attributes for my site such as mail address, mail from, smtp server, user/pass for smtp,etc.PHP Mailer v5.0 class.phpmailer.php is a very long script and I only found a couple of places to put the FROM address as follows:
I'd like to have anything that tries to send mail locally on my machine (including crontab reports for instance) to be handled by my ISP's smtp server instead of my machine acting like it's own SMTP server. I've spent around 15 hours trying to figure out how to do this and I keep either getting into things that I don't understand, or hitting brick walls (for instance, I found nullmailer, but after installing it, it seemed like it would only work on Unix) Is there an application like nullmailer which I can use as my MTA to forward all internal mail to a different SMTP?
I tried setting up evolution mail incoming worked fine outgoing Big No, so I install Thunderbird and it worked like a charm. Then I decided I liked Evolution a little more and wanted to see if I could get it working and came across this. Firstly I entered all my details correctly double and triple checked. Look at my user name now when i try sending an email I get this? Why has my email changed?
I'm trying to set up my postfix server to relay mail (via a php cms) using Gmail's smtp on my account, but for some reason, Gmail returns an error code that StartTLS must be sent first, my postfix main.cnf file can be found at pastebin, because of this forum's text length I cannot paste my postfix main.cnf file as can be seen I have everything set and configured for Gmail, but postfix (for some unseen reason) can not send StartTLS. [URL].
I am setting up a CentOS box as a NAT firewall that needs to also send mail. It needs to send this mail using an outside provider's SMTP. The provider requires SMTP over SSL. None of the machines inside the NAT will ever send mail except via the provider's SMTP nor will they ever receive mail except to local clients via the provider's IMAP servers.
So for the example the machine is TESTMACHINE. There is one internet facing ethernet port connected to a DSL modem via pppoe.
The SMTP it needs to send mail via is mail.host.net which requires SMTP over SSL (port 465) and username/password authentication.
The sendmail documentation is quite confusing on how to get this simple setup operating, so an example showing the appropriate changes to sendmail.mc and other require config files.
I've been having this problem since 10.6 released, but have until now been successful with the "just use Thunderbird" response. My sendmail server hasn't been changed, but as clients upgrade from OSX 10.5 to 10.6 suddenly mail.app will no longer connects to send SMTP messages through the server. (IMAP connections to the same server using the same user/pass combinations work perfectly) When I look at the logs, things basically stop right after the STARTTLS command.
Google indicates alot of people are having similar problems, but I'm not seeing any solutions. Do any of you administrate sendmail servers where some of your clients are using Apple's Mail.app on Snow Leopard, and if so what settings are you using? At this point, I'm happy to make changes to the server to accommodate Apple's issue, I have too many Mac users connecting to my server. I just can't figure out what to change. I've enabled virtually every possible login authentication combination, and none of them work.
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).
I have one Centos Server and I want to forward root mail to 1 external account: [URL] I installed sendmail and created /root/.forward with this content: [URL] and I sent a test mail with this command: /usr/sbin/sendmail root <prueba.txt But nothing was forwarded.
After that I ran the same command with the verbose option:
/usr/sbin/sendmail -v root <prueba.txt
And this is the output:
root... Connecting to [127.0.0.1] via relay...
220 localhost.localdomain ESMTP Sendmail 8.13.8/8.13.8; Wed, 3 Nov 2010 21:09:39 -0600 >>> EHLO localhost.localdomain 250-localhost.localdomain Hello myfriend [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES
For some reason sendmail tried to connect to example.com smtp server and couldn't reach it. I am sure this is because the smtp server for example.com domain is not example.com is mail.example.com. Besides mail.example.com requires authentication, username , password and the smtp port is not the default 25 is 9999. configure sendmail to forward root mail to a smtp server that requires authentication, username, password with a not the default 25 port?
(Desktop with Debian sid) How do I configure Exim4 to send local mail locally and other mail through my ISP? I just did dpkg-reconfigure exim4-config and none of the choices seemed to give me the answer. I have a lot of frozen email addressed to: root@<My_ISP_SMTP_URL>. I also don't know what happens to regular email sent from Mutt. I have no problem sending email through my laptop on the same LAN.
Linux [URL] 2.6.26-2-686 #1 SMP Wed Feb 10 08:59:21 UTC 2010 i686 GNU/Linux Currently I have exim4 configured to use my mail server as a relay to send php emails. Though I don�t think I want this setup. My goal is to be able to track emails sent out to make sure that nothing happened and they got bounced back. I need to be able to find the emails that are bounced.
If I configure exim4 to send emails from the current (apache2 / php) server any emails that bounce will end up there, correct? We have clients that are expecting emails and are complaining they do not always get them so something is not 100% configured correctly. I am going to re-run #dpkg-reconfigure exim4-config