Scott Race wrote: [...]
>I've done some basic testing for open relays, so far I have not found anything >indicating it's an open relay. Packet sniffing shows connections >from a >number of IP addresses to the Mailman server. Outside test shows the hostname >is not an open relay, and I can't telnet on port 25 with >standard HELO >command. All internal mail comes to a Barrucuda spam filter unit. >/usr/local/mailman/logs/post shows 19 posts today to the various lists. The Postfix logs would be of more benefit I think here, as well as the mail queue. You say you route mails through a Barracuda host, do you allow traffic directly into this machine on port 25 externally? Is this machine hosting lists only, and if so, how is the Barracuda/Postfix server verifying recipients as early as possible (in case the domain is receiving large amounts of bounced mail and is rejecting with a full NDR and not a bounce at SMTP stage? Does outbound mail get delivered direct from Postfix or are you smarthosting to the Barracuda? Thanks. Andrew. ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org
