Re: Handling spam

["Peter Münster" <pm@a16n.net>]

On Wed, Mar 22 2023, Christian Lynbech wrote:

> So, any ideas or recommendations?

A bit OT, but perhaps a valuable advice: Whatever you do, IMHO the
sender should be informed, when his message won't be read because of the
filtering. Here is my way doing that:

fetchmail (IMAP) -> procmail -> Gnus (nnml)

And in ~/.procmailrc I have something like this:

--8<---------------cut here---------------start------------->8---
:0fw
* < $SPAM_MAX_SIZE
| spamassassin

:0
* 1^1    ^X-Spam-Flag: YES
* -10^0  ^Subject:.*no-spam
* -3^0   ^Content-Type: .*signed
* -3^0   ^To:.*special@address-1
* -3^0   ^From: Special <special@address-2>
* -1^0   ^List-Id:
{
	:0 ch
	| (formail -r -t -A"From: $NOREPLY" \
	-A"Content-Type: text/plain; charset=utf-8"; \
	cat $SPAMMSG $SIG) | $SENDMAIL -r $NOREPLY -t

	:0:
	spam.spool
}
--8<---------------cut here---------------end--------------->8---

And in $SPAMMSG:

--8<---------------cut here---------------start------------->8---
Your message has been rejected and won't be read, because it appears
to be spam. If this is not the case, please prepend `no-spam' to the
beginning of the subject field and send again.
--8<---------------cut here---------------end--------------->8---

Cheers,
-- 
           Peter