I'd like to use an ACL to reject incoming spam, but I don't know
how to write it.
In my case I run mailing lists, and I get a fair number of emails
where the From and To addresses are a dead giveaway that it's
spam. My mailing list addresses have suffixes like -on, -off,
-vacation, etc. that are tacked on to the base list name.
For example, this email would be spam
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
So I want to strip off the suffix, and then compare the base list
name of the Envelope From and Receipent To address. If there is
a case insensitive match, I want to reject the email.
Something like this
drop message = From and To address contain the same list name
condition = ${if eqi {$0}{$1} { match
{$local_part}{^.*-(on|off)\$}} \
{ match {$sender_address_local_part}{^.*-(on|off)\$}} {1}{0}}
Actually, nothing like the above, but if you can whip out an Exim
ACL condition to solve this problem, I would appreciate it.
Thank you.
mark
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