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URGENT unable to relay mail

By lheisey ·
Exchange 5.5 server all of a sudden it is not receiving mail.

The original message was received at Wed, 30 Jun 2004 11:32:28 -0400 (EDT)
from IDENT:mirapoint@[216.168.230.180]

----- The following addresses had permanent fatal errors -----
<lheisey@microplasticsinc.com>
(reason: 550 5.7.1 Unable to relay for lheisey@microplasticsinc.com)

----- Transcript of session follows -----
... while talking to mail.microplasticsinc.com.:
>>> DATA
<<< 550 5.7.1 Unable to relay for lheisey@microplasticsinc.com
550 5.1.1 <lheisey@microplasticsinc.com>... User unknown
<<< 554 5.5.2 No valid recipients


--------------------------------------------------------------------------------

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by pierrejamme In reply to URGENT unable to relay m ...

DNSReport says:
Trying to connect to all mailservers:

mail.microplasticsinc.com. - 69.7.200.66 [Could not connect: Got an unknown RCPT TO response: 550 5.7.1 Unable to relay for lheisey@microplasticsinc.com
]
backupmx01.cimcoisp.net. - 69.7.192.6 [Successful connect: Got a good response [250 Ok]]

It lookls like your ISP has a problem wih MX records on your main mail server. or your Exchange server is misconfigured. Search microsof for the error "550 5.7.1 Unable to relay ". I found a lot, like:
http://support.microsoft.com/default.aspx?scid=kb;en-us;q289553

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by lheisey In reply to

Poster rated this answer.

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by lheisey In reply to URGENT unable to relay m ...

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