On Feb 17, 2011, at 4:13 PM, Sam Varshavchik <[email protected]> wrote:
> Greg Earle writes: > >> syslog:Feb 16 16:15:20 isolar courieresmtpd: [ID 702911 mail.error] >> error,relay=::ffff:98.138.91.23,from=<[email protected]>: 517 HELO >> nm8-vm0.bullet.mail.ne1.yahoo.com does not exist. >> I don't really understand why, because sometimes they get through just fine: > > That suggests flaky DNS. Not necessarily your DNS, but Yahoo's DNS. > > The only thing that can be done, in those cases, is to also whitelist the > sending IPs. Agreed - but isn't isolar:1:65 [/opt/courier/etc/smtpaccess] # grep 98.138.91 default 98.138.91 allow,RELAYCLIENT,BOFHCHECKDNS=0,BOFHCHECKHELO=0 "whitelist[ing] the sending IPs"? I put that entry in there on Jan. 31st after having seen this rejection: Jan 31 07:09:02 isolar courieresmtpd: [ID 702911 mail.error] \ error,relay=::ffff:98.139.91.93,from=<[relative@relative's address]>: \ 517 HELO nm23.bullet.mail.sp2.yahoo.com does not exist. but before this next rejection happened: Feb 4 12:23:27 isolar courieresmtpd: [ID 702911 mail.error] \ error,relay=::ffff:98.138.91.55,from=<[relative@relative's address]>: \ 517 HELO nm3-vm0.bullet.mail.ne1.yahoo.com does not exist. My question, in other words, was why did this smtpaccess entry above did not work to let the later (Feb. 4th) message through, even though it was initiated from a 98.138.91.xx IP address? It's as if using a subnet address in smtpaccess does not work (I hope I don't have to fully-qualify every single exception!) even though couriertcpd(1) implies that a subnet address works. Or are you talking about a different mechanism for "whitelist"? - Greg ------------------------------------------------------------------------------ The ultimate all-in-one performance toolkit: Intel(R) Parallel Studio XE: Pinpoint memory and threading errors before they happen. Find and fix more than 250 security defects in the development cycle. Locate bottlenecks in serial and parallel code that limit performance. http://p.sf.net/sfu/intel-dev2devfeb _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
