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sendmail issue sending through mail relay.

 
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jmckinzie
Super Advisor

sendmail issue sending through mail relay.

Getting an error when trying to send mail through mail relay.

email.address@comp.com... Connecting to citi.com via esmtp...
email.address@comp.com... Host unknown (Name server: comp.com: no data known)
/dead.letter... Saved message in /dead.letter

I have copied my sendmail.cf from a working server...still getting this issue.

Any ideas?
2 REPLIES
Matti_Kurkela
Honored Contributor
Solution

Re: sendmail issue sending through mail relay.

Does the server from where you copied the sendmail.cf use a different DNS server?

Are the DNS settings (/etc/nsswitch.conf, /etc/resolv.conf) correct in the server you're trying to send email from?

The error messages suggest that this server cannot get information from the DNS for some reason.

MK
MK
jmckinzie
Super Advisor

Re: sendmail issue sending through mail relay.

I had to also change the default /etc/mail/sendmail.cf file (from a working server)