View source for Setup Qmail to Listen on port 587 for SMTP

===Setting up Qmail to Listen on Alternative Port 587===

When setting my home connection to use port 25 to send my mail, I discovered that ATT does block port 25.  This was making it hard to send my emails when on my home network.  To fix this problme I have enabled port 587 to connect and send emails with.

==Setup Qmail to use Port 587==

You can probably do this in many different ways, but I used the following

 cd /var/qmail/supervise/
 cp -rf qmail-smptd/ qmail-smptd587/

Now we have to change this to listen to port 587

 vim qmail-smptd587/run

Now find the following line
 exec /usr/local/bin/softlimit -m 50000000 \
 /usr/local/bin/tcpserver -v -R -l "$LOCAL" -x /etc/tcp.smtp.cdb -c "$MAXSMTPD" \
 -u "$QMAILDUID" -g "$NOFILESGID" 0 smtp \

and replace the smtp with 587

 exec /usr/local/bin/softlimit -m 50000000 \
 /usr/local/bin/tcpserver -v -R -l "$LOCAL" -x /etc/tcp.smtp.cdb -c "$MAXSMTPD" \
 -u "$QMAILDUID" -g "$NOFILESGID" 0 587 \

Now save that file and edit the log file, unless you want it to log to the same file as smtpd

 vim qmail-smptd587/log/run

Now find the following line

 exec setuidgid qmaill multilog t s100000 n20 /var/log/qmail/qmail-smtpd 2>&1

and replace the log location to

 exec setuidgid qmaill multilog t s100000 n20 /var/log/qmail/qmail-smtpd587 2>&1

==Set smptd587 to run in /service/==

Now we just have to make it start up with the rest of the qmail scripts

 cd /service/
 ln -s /var/qmail/supervise/qmail-smtpd587

Now your all set, if you check the listening ports it should be listed

 netstat -nplt

One last thing, if you have a firewall on your server, you will want to open port 587