Greg Earle writes:
On Feb 17, 2011, at 4:13 PM, Sam Varshavchik <mr...@courier-mta.com> wrote:Greg Earle writes:syslog:Feb 16 16:15:20 isolar courieresmtpd: [ID 702911 mail.error] error,relay=::ffff:98.138.91.23,from=<tsarmstron...@att.net>: 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"?
Ok, but did you run makesmtpaccess? Check the timestamp on smtpaccess.dat
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