Mail Server (also known as a mail transfer agent or MTA, a mail transport agent, a mail router or an Internet mailer) is an application that receives incoming e-mail from local users (people within the same domain) and remote senders and forwards outgoing e-mail for delivery. A computer dedicated to running such applications is also called a mail server.
Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail, intended as an alternative to Sendmail MTA. Following Queue lengths are observed by Nodelizer:
Exim is a mail transfer agent (MTA) used in Unix like operating systems.
By domain – The number of messages, the total kb/mb of mail queued and the oldest and newest messages queued.
Sendmail is a general purpose internetwork email routing facility that supports many kinds of mail-transfer and delivery methods, including the SMTP used for email transport over the Internet.
qmail is a secure, reliable, efficient, simple message transfer agent. It is designed for typical Internet-connected UNIX hosts.
The Zimbra MTA (Mail Transfer Agent) receives mail via SMTP and routes each message, using Local Mail Transfer Protocol (LMTP), to the appropriate Zimbra mailbox server. Following Queue lengths are observed by Nodelizer:
Note : Currently supported mail transfer agents – postfix, sendmail, exim, qmail, zimbra.
Edit config.cfg file.
Uncomment the lines containing Mail Server config variables(remove # symbol) :
( mail_agent options – postfix, sendmail, exim, qmail, zimbra )
- Change the default value(s) as required.
Restart rptmonitor :
For deb/rpm package supported Linux distros :
sudo /etc/init.d/rptmonitor restart
For openSUSE(11.4+) with systemd :
sudo systemctl restart rptmonitor.service
For other Linux distro, FreeBSD8+, Mac OS X+ :
sudo python /usr/local/bin/rptmonitor/monitor.py restart