nanog mailing list archives
Re: Yahoo and their mail filters..
From: Suresh Ramasubramanian <ops.lists () gmail com>
Date: Wed, 25 Feb 2009 17:11:44 +0530
On Wed, Feb 25, 2009 at 5:02 PM, Niall Donegan <niall () blacknight com> wrote:
Another interesting side effect of that is email forwarder accounts. Take a user who gets a domain on our shared hosting setup and forwards the email for certain users to a Yahoo account. If those mails are marked as spam, it seems to be our server that gets blacklisted rather than the originating server.
No surprise. Guess whose IP is the one handing off to yahoo? If you have forwarding users - * Spam filter them to reject spam rather than simply tag and forward it. * Isolate your forwarding traffic through a single IP, Let ISPs know.
Feedback loops often aren't that useful either. We're on the AOL Scomp feedback loop, and we've often got fairly personal email sent to our abuse desk because the users simply press spam rather than delete.
You have a far smaller userbase, and a userbase you know. For us, with random nigerians and other spammers signing up / trying to sign up all the time, FBLs are invaluable as a realtime notification of spam issues. And as I said random misdirected spam reports wont trigger a block as much as your leaking forwarded spam. Or your getting a hacked cgi/php or a spammer installed direct to mx spamware. [so if you are cpanel - smtp tweak/csf firewall and mod_security for apache should be default on your install if you havent already done so] -srs
Current thread:
- Re: Yahoo and their mail filters.., (continued)
- Re: Yahoo and their mail filters.. Brian Keefer (Feb 25)
- RE: Yahoo and their mail filters.. Ray Corbin (Feb 25)
- Re: Yahoo and their mail filters.. J.D. Falk (Feb 26)
- Re: Yahoo and their mail filters.. Brian Keefer (Feb 26)
- Re: Yahoo and their mail filters.. Rich Kulawiec (Feb 26)
- Re: Yahoo and their mail filters.. Carl Ford (Feb 26)
- RE: Yahoo and their mail filters.. Carlos Alcantar (Feb 24)
- Re: Yahoo and their mail filters.. Stefan Molnar (Feb 24)
- Re: Yahoo and their mail filters.. Stefan Molnar (Feb 24)
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 24)
- Message not available
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 25)
- RE: Yahoo and their mail filters.. Ray Corbin (Feb 25)
- Re: Yahoo and their mail filters.. Eric Esslinger (Feb 25)
- RE: Yahoo and their mail filters.. Richey (Feb 25)
- RE: Yahoo and their mail filters.. Ray Corbin (Feb 25)
- Re: Yahoo and their mail filters.. Jo Rhett (Feb 26)
- RE: Yahoo and their mail filters.. Ray Corbin (Feb 27)
- Re: Yahoo and their mail filters.. Ken A (Feb 27)
- Re: Yahoo and their mail filters.. Brielle Bruns (Feb 25)
- RE: Yahoo and their mail filters.. Peter Beckman (Feb 25)
- Re: Yahoo and their mail filters.. Suresh Ramasubramanian (Feb 25)
- Re: Yahoo and their mail filters.. Brian Keefer (Feb 25)