mailscanner as smtpd-proxy

Mark Sapiro mark at
Sat Apr 4 17:22:33 UTC 2020

On 4/4/20 9:55 AM, support at wrote:
> hi,
> it is possible to use mailscanner as smtpd-proxy in postfix like amavisd?
> currently the state is, that postfix accept a mail with SMTP-Code 250 and hold the mail in his queue.
> i have the whish, to scan and reject with the SMTP-Code 5XX if a mail is a spam or have malware content before postfix confirm the message with 250.

This is currently a work in progress in MailScanner, but we aren't there
yet. Recent MailScanner can be configured with Postfix as an smtpd
milter, but in almost all cases, the milter 'discards' the message and
passes it to MailScanner which processes it and if accepted, resubmits
it to Postfix.

The milter could actually invoke the MailScanner process on the message
but doesn't in order to avoid a potentially log running process.

Mark Sapiro <mark at>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

More information about the MailScanner mailing list