[Mimedefang] Detect mail loops in mimedefang ?
suter at zwitterion.humbug.org.au
Thu Jul 28 08:36:06 EDT 2005
-----BEGIN PGP SIGNED MESSAGE-----
> First I wanted to check the Received: lines and count every line where
> one of our mailrelays is in. If the count reaches a specific value drop
> the mail. The Problem is, that the Received-lines are written new if the
> message is bounced.
Sendmail has been counting Received: lines for ages - that's the
mechanism behind the maximum hop count:
> Theoretically I have to check the whole message for this Received: lines
> ? Or is there another possibility to check for looping mails ?
Theoretically, a mail loop may exist yet be undetectable. In
practice, this theoretical possibility doesn't matter and
sendmail's maximum hop count is enough.
I would caution you against spending too much effort protecting
about an unlikely event; however, it may be that it has happened
to you recently.
- -- Mark John Suter | I know that you believe you understand
suter at humbug.org.au | what you think I said, but I am not sure
gpg key id 2C71D63D | you realise that what you heard is not
mobile 0411 262 316 | what I meant. Robert J. McCloskey
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (GNU/Linux)
Comment: Check Keyservers or http://zwitterion.org/keys/
-----END PGP SIGNATURE-----
More information about the MIMEDefang