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Old 09-08-2009, 08:52 AM   #1
varun2109
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Registered: Apr 2008
Posts: 27

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Host Unknown Error:Sendmail


Dear All,

Many of mails sent from my mail server that are in Queue;
The main reason is deffered by domains like yahoo,aol,etc.
but there is one more error that i keep getting and that is
Host Unknown,
Below is an example from mail log,
The catch is,test mail sent on the same email id sent from my personal mail from the same server i.e. varun.m@mycompanysdomain.com was delivered
However,another mail containing client information sent from customercare@mycompanysdomain ended up in queue.

There are more examples of the same,around 20 domain have the same problem.

Please Help.

Sep 7 14:33:46 server2 sendmail[24591]: n8793jiC024589: to=<abc@xyz.fi>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=163672, relay=xyz.fi., dsn=5.1.2, stat=Host unknown (Name server: xyz.fi.: host not found)

Sep 7 22:09:42 server2 sendmail[6407]: n87Gdffa006403: to=<abc@def-fgh.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=152474, relay=def-fgh.com., dsn=5.1.2, stat=Host unknown (Name server: def-fgh.com.: host not found)

Thank You In Advance.
 
Old 09-08-2009, 11:37 AM   #2
TB0ne
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Distribution: SuSE, RedHat, Slack,CentOS
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Quote:
Originally Posted by varun2109 View Post
Dear All,

Many of mails sent from my mail server that are in Queue;
The main reason is deffered by domains like yahoo,aol,etc.
but there is one more error that i keep getting and that is
Host Unknown,
Below is an example from mail log,
The catch is,test mail sent on the same email id sent from my personal mail from the same server i.e. varun.m@mycompanysdomain.com was delivered
However,another mail containing client information sent from customercare@mycompanysdomain ended up in queue.

There are more examples of the same,around 20 domain have the same problem.

Please Help.

Sep 7 14:33:46 server2 sendmail[24591]: n8793jiC024589: to=<abc@xyz.fi>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=163672, relay=xyz.fi., dsn=5.1.2, stat=Host unknown (Name server: xyz.fi.: host not found)

Sep 7 22:09:42 server2 sendmail[6407]: n87Gdffa006403: to=<abc@def-fgh.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=152474, relay=def-fgh.com., dsn=5.1.2, stat=Host unknown (Name server: def-fgh.com.: host not found)

Thank You In Advance.
Well, if you're using Yahoo, AOL, etc. for your mail relays, I'm not surprised. Your personal address doesn't send many through, so it allows it. "customercare" probably shovels through alot, so it's very suspicious, and they've blacklisted you, as a probable spammer.

Contact them, and see what's up.
 
Old 09-08-2009, 11:49 PM   #3
varun2109
LQ Newbie
 
Registered: Apr 2008
Posts: 27

Original Poster
Rep: Reputation: 15
thanks Tbone,

but the problem is not yahoo,aol as mails sent to these domains are deffered and are sent after a day or two,
however there are other domains which are not public...still i get this error??
 
  


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