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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)"

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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eli2011
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eli2011
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1 Solution
 
Jan SpringerCommented:
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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eli2011Author Commented:
what can I check to make sure the issue is not on the server side?
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Jan SpringerCommented:
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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gheistCommented:
451 is perfectly normal temporary status message
It instructs you to send later.
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