sendmail problem

[Satish Y]

Hi All,

I am receiving the following msg into /var/adm/syslog/mail.log :

Mar 10 17:02:32 myhost sendmail[28259]: gethostbyaddr(153.40.17.150) failed: 1

same msg logging every 2 minutes... ofcourse now it has been stopped. But do anyone having any idea why and where from(program/util) this msg is being received?.

I tried to check with sendmail cmd by passing wrong host ip addr, but of no use.

Thanks in advance.

Cheers...
Satish.

[Helen French]

Hi Satish,

Check this out:

http://us-support.external.hp.com/cki/bin/doc.pl/sid=99ac1b111209abeaf1/screen=ckiDisplayDocument?docId=500000000092459

HTH,
Shiju

[Jeff Schussele]

Satish,

That IP/host has a DNS problem.
Either it's forward or reverse lookup is missing in DNS. Course it could be a bad address also.
If not have your DNS people correct it.
Sendmail always does forward AND revers lookups on hosts.

HTH,
Jeff

[Sanjay_6]

Hi Satish,

Looks like your sendmail server is not able to resolve its own hostname and ip address. Or you are using a system entry in the sendmail configuration file "/etc/mail/sendmail.cf" which it is unable to resolve. This entry could be your relay server. If you are using a relay, check if the system is able to resolve the relay server name and ip address.

Hope this helps.

Regds