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Old 06-19-2007, 10:33 PM   #1
Registered: Nov 2001
Location: n chicago, IL. USA
Distribution: Slackware
Posts: 307

Rep: Reputation: 31
reject=451 sendmail

my mail server has been running fine for years now, and today any incomming mail
is getting this error
Jun 19 22:24:00 mueller5 sendmail[2012]: l5K3Nx9l002012: ruleset=check_mail, arg1=<>, relay=[], reject=451 4.1.8 Domain of sender address does not resolve
(this was sent via mail2web from and to the the user p)

using redhat 9, and sendmail-8.12.8-9.90

this is strange since it's been flawless for so long.
no dns records changed.
this error is domain wide. i have 4 domains using this server.

any help would be apreciated.

i'm googlin up the ying yang

Old 06-19-2007, 11:20 PM   #2
Registered: Nov 2001
Location: n chicago, IL. USA
Distribution: Slackware
Posts: 307

Original Poster
Rep: Reputation: 31
please excuse this post. i didn't realize i posted in the wrong forum( should have read the sticky)

anyway problem solved.
named was down. there was a power surge, server restarted without this service at startup.



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