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