Jerry Gardner a écrit : > I have Postfix (2.5.5) set up to deliver email to virtual users (without > accounts on the system), and this works fine. > > I'm trying to add DSPAM to filter spam, but run into problems with mail > loops when trying to get it to work. > > I have DSPAM configured as a transport in Postfix with the following > line in master.cf <http://master.cf>: > > dspam unix - n n - 10 pipe > flags=Ru user=dspam argv=/usr/bin/dspam --deliver=innocent,spam > --user $user -i -f $sender -- recipient > > and the following in main.cf <http://main.cf>: > > virtual_transport = dspam
> dspam_destination_recipient_limit = 1 > > smtpd_client_restrictions = > permit_mynetworks, > check_client_access pcre:/etc/postfix/dspam_filter_access > > In dspam.conf I have: > > TrustedDeliveryAgent "/usr/sbin/sendmail" > > When an email arrives, Postfix passes it off to dspam for filtering, and > dspam passes it back to Postfix for final delivery. Instead of putting > the mail in the virtual user's mailbox, it immediately passes it back to > dspam. Eventually it detects this as a mail loop and gives up. > > How do I get Postfix to recognize that the message as already been > through dspam once already and deliver it to the user's mailbox rather > than giving it back to dspam? > > It seems I'm almost there with this configuration, but am missing a > crucial step that prevents the loop... if you tell postfix to use dspam to deliver mail, and you tell dspam to use postfix (sendmail command) to deliver mail, for sure, you loop. to filter mail, use content_filter, not virtual_transport. and if your filter needs to run sendmail to deliver mail, then you need to disable filtering for the sendmail command (pickup in master.cf). do yourself and us a favour and run dspam in relay mode.
