On 1/2/12 7:08 AM, Jeroen Geilman wrote: > On 01/02/2012 02:00 AM, Philip Prindeville wrote: >> I have a 'border' postfix MTA that doesn't host any mailboxes, indeed it >> doesn't even know what the valid usernames are for the domain. >> >> It merely serves to check messages for viruses, and block DoS attacks. >> >> As such, I need it to perform aliasing *only* on messages generated locally >> by system services, such as 'cron'. >> >> How do I configure that? I.e. that if a message is submitted locally by a >> service such as 'cron' or 'logwatch', it should be aliased to an internal >> mailbox name on an Intranet server... >> >> Thanks, >> >> -Philip > There are several approaches. > > Local processes use sendmail(1) to submit mail. > This is partly outside the normal flow of SMTP mail, as diagrammed here: > http://www.postfix.org/OVERVIEW.html#receiving > > The pickup(8) service allows you to specify a content_filter, which you > could use to inject this mail into a separate smtpd(8) listener with > different restrictions than the main port 25 listener, one of those > being to allow aliasing to external recipients. > > You could also set receive_override_options on the pickup(8) service > directly, and disable them on the normal smtpd(8) listener. > > http://www.postfix.org/pickup.8.html > http://www.postfix.org/postconf.5.html#content_filter > http://www.postfix.org/FILTER_README.html > http://www.postfix.org/postconf.5.html#receive_override_options >
So I can have: echo "receive_override_options = no_address_mappings" >> /etc/postfix/main.cf but then in master.cf have: pickup ... -o receive_override_options= is that correct? -Philip
