Richard Smits wrote:
Hello,
I have a puzzle which I hope someone can help me with. I want to do a
header check with postfix, and if the subject, contains a word, call a
script or program to put the mail message in a quarantaine.
I also want to make an exception for some email recipients.
I know we can do this with amavis and spamassassin, but I don't want
to use spamassassin. The reason for this construction is that our isp
will implement a spamfilter, and i don't want to check the emails twice.
If the message has a spamtag in the subject, i want to put it in a
quarantainedir. But some people want to receive their spam, so those
are the exceptions.
So, is this possible with postfix alone, and without spamassassin ?
No. You need some sort of content filter daemon to do this.
Reasoning:
1. header_checks can only REDIRECT to another address (which of
course can then be piped) or FILTER to a content filter
2. header_checks CANNOT exempt certain recipients for a given
transport (assuming you put it in master.cf and not main.cf)
If you remove the exemption requirement, then it IS possible for postfix
alone if and only if a previous filter applied such a header. Then, the
REDIRECT option becomes available.
Brian
