Mail loops back to me error in /var/adm/message after patching

UNIX Solaris
1

Hi,

I am getting the below messsage in /var/adm/message after patching but sendmail is working after restoring the backup file.

sendmail[14775]: [ID 801593 mail.crit] q4G7U1Cj014774: SYSERR(root): 127.0.0.1 config error: mail loops back to me (MX problem?)
sendmail[25828]: [ID 801593 mail.crit] q4G801cw025824: SYSERR(root): 127.0.0.1 config error: mail loops back to me (MX problem?)
sendmail[5196]: [ID 801593 mail.crit] q4G8U1YQ005195: SYSERR(root): 127.0.0.1 config error: mail loops back to me (MX problem?)

Thanks...

2

Sounds like either your sendmail config was borked by the patch or you have zonefiles misconfigured for your domain (if you aren't running your own DNS, this is less likely). I seem to recall having this happen while configuring sendmail in the late 90s. This page has a decent overview -

Unix Tip: Mail loops back to me | ITworld

3

I added hostname in /etc/mail/local-host-names but still dint fix up the issue. Is there any way i can avoid filling up /var/adm/messages?

4

I tried the default send mail configuration file and it is working but it is also throwing up the same error in /var/adm