How to set up a separate mail submission port (MSP) with Qmail
Because a lot of ISPs have started blocking outgoing port 25 (SMTP) for their users, it's become slightly more difficult to send mail over SMTP via, say, a remotely hosted mail server. If you're using qmail with Bill Shupp's QMail Toaster patch, I've provided instructions here that let you set up an alternate port for authenticated outgoing e-mail, but not incoming e-mail, as specified in RFC 2476.
- Download and apply this patch to your netqmail-1.05 source after applying the qmail-toaster patch.
- Duplicate your qmail-smtpd service into a new qmail-smtpsubmit service, and change the following in the new service:
- Change port "25" or "smtp" to "587", which is the standard submission port.
SUBMISSION=""to the beginning of the "exec tcpserver" line in the
runscript. For example, here are the contents of my /service/qmail-smtpd/run script:
#!/bin/sh SUBMISSION="" exec /usr/local/bin/envuidgid vpopmail \ /usr/local/bin/tcpserver -vHRU \ -c20 0 587 \ /usr/local/bin/recordio \ /var/qmail/bin/qmail-smtpd /var/qmail/vpopmail/bin/vchkpw /bin/true 2>&1
- Change the log directory in the
log/runscript to be qmail-smtpsubmit instead of qmail-smtpd.