hello,,,
my mail server has been running fine for years now, and today any incomming mail
is getting this error
Code:
Jun 19 22:24:00 mueller5 sendmail[2012]: l5K3Nx9l002012: ruleset=check_mail, arg1=<p@mail.mueller5.us>, relay=[168.144.250.211], reject=451 4.1.8 Domain of sender address p@mail.mueller5.us 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
thanks