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what would be the most likely cause for this error when using mail in linux redhat "(Deferred: 451 4.3.2 Please try again later)"

Posted on 2015-02-24
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Last Modified: 2015-02-25
i get this error every now and again for certain emails but i'm not sure why
the service works for the most part.
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Question by:eli2011
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by:Jan Springer
ID: 40628615
several reasons, one of the most common is that it may be that the remote host is overloaded and cannot accept mail at that time.
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by:eli2011
ID: 40628692
what can I check to make sure the issue is not on the server side?
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Jan Springer earned 500 total points
ID: 40628701
grep the smtpid in /var/log/maillog

and show /var/spool/mqueue/qf<smtpid>

you can change the IP and domain names
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by:gheist
ID: 40629198
451 is perfectly normal temporary status message
It instructs you to send later.
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