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MAIL SERVERSETUP USING POSTFIX ON CENTOS 6.4 Part 1 MTA Postfix Chapter 1 Email Service Chapter 2 Mail Transfer Agents Chapter 3 Installation and Startup Chapter 4 Postfix Configuration Part 2 IMAP & POP3 Server Chapter 5 IMAP and POP3 on Dovecot Chapter 6 MUA Configuration Part 3 Postfix aliases & access control Chapter […] We’re a PA partner and have clustered Qmail with 4 servers + NFS storage. We’ve seen an issue where Qmail throws the following error: failure: Sorry,_I_could_not_find_a_mail_exchanger_or_IP_address._(#5.4.4)/ This is a permanent error and means Qmail will not retry, the sender will receive an NDR (Non delivery reply / bounce back). I’ve seen 3 causes so far […] Postfix is fast and popular SMTP server widely used. The main job of postfix is to relay mail locally or to intended destination outside the network. Some of the most popular SMTP servers are Sendmail, Postfix and Qmail. By default Sendmail comes pre-installed with CentOS/RHEL 5. We will need to remove it and install Postfix. […] This post will explain how to configure a backup MX server for queuing mail for two (or more) domains if the primary mail server of those domains become unreachable. I’ve tested this configuration for relaying mail to Microsoft Exchange, Postfix, QMail, Sendmail, Lotus Domino, Merak and other less common mail server without any kind of […] This post will show a simple perl tool to manage (delete) one or more message in Postfix mail queue. The main script to use is delete-mailq.pl Create a file called delete-mailq.pl in /usr/local/bin with the the following content : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 […] I prefer to use corporate mail server for mail relay mails from Linux box. While settingup Nagios for my friend and as he insisted using Gmail to send Nagios alters I found interesting post. Install dependencies. yum -y install openssl-perl If /etc/pki/CA/private/cakey.pem does not exists /etc/pki/tls/misc/CA.pl -newca That will create the cakey.pem file in /etc/pki/CA/private […] Earlier we have covered postfix- relay mails to gmail This tip is for the qmail server using Jms patch. Many of us prefer Qmail instead of Postfix, especially when it come to use as mail server, for the one who wish to relay mails postfix is easy to install. Make sure you have created cert […] How to setup Relay host in mail server POSTED ON SEPTEMBER 12, 2013 // Please refer to the following information to assist in configuring various of the common mail servers: Microsoft Exchange 2003 Important: If you are using Exchange with smtp-proxy.tm.net.my, you must configure your server to reject invalid recipients during the SMTP session, rather […] root@localhost control]# pwd /var/qmail/control [root@localhost control]# cat helohost cat helohost mail.rmohan.com /var/qmail/control/me mail.rmohan.com control file of qmail Presented by demilitarized area December 31, 2003 Last updated: control file, which controls the behavior of qmail resides in / var / qmail / control directory. Unlike such as sendmail, each control, it is not organized in a single file, you can set as a file of each control in […] |
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