Hey Alessandro - did you receive any replies not cc'd to the list? Just thinking out loud here... does courier cache lookups or is it possible your local resolver did? Maybe something cached the lookup of your SPF for your domain - and then the non-cached lookup of the IP failed... Could that result in the behaviour you see? Maybe you would have to have timed your test to occur during the cache lifetime of the spf record?
Mitch -----Original Message----- From: Alessandro Vesely [mailto:ves...@tana.it] Sent: November-12-15 3:23 AM To: Courier Users Subject: [courier-users] No SPF reject during DNS outage. How come? Hi! I received a bunch of spam marked like this: Return-Path: <zl...@tana.it> Received: from [210.205.1.118] (softdnserr [210.205.1.118]) by wmail.tana.it with ESMTP; Thu, 12 Nov 2015 09:55:57 +0100 id 00000000005DC042.0000000056445431.00005BFC Received-SPF: error (Address does not pass the Sender Policy Framework) SPF=MAILFROM; sender=zl...@tana.it; remoteip=210.205.1.118; remotehost=softdnserr; helo=[210.205.1.118]; receiver=wmail.tana.it; The "softdnserr" presumably came from DNS outage. The NS was disconnected for quite some time, so only internal stuff was being resolved during reception. Thus, Courier could get a -all SPF record for tana.it, but not the reverse IP for that Korean address. However, I tried to reproduce that behavior to no avail. At the console, I always got _517 SPF fail_ after MAIL FROM:, even if I disconnected the NS again. My Courier version is getting old, but this doesn't seem to be related to the recent SPF fix, does it? Any other idea? TIA Ale ------------------------------------------------------------------------------ _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users ------------------------------------------------------------------------------ _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
