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Syntax error, command unrecognized

By martin_hero ·
I GOT THE FOLLOWING MESSAGE , when i send a mail to my client , their mail server reply this mail to me , Would anyone know what happen is it ?

My mail config:
NT 4 SP6
EXCHANGE 5.5


Your message did not reach some or all of the intendedrecipients.

Subject: Mail test Sent:11/6/2003 11:27

The following recipient(s) could not be reached:

support@sea.com on 11/6/2003 11:40
Unable to deliver the message due to a communications failure
The MTS-ID ofthe original message is: c=xx;a= ;p=xxxxxx;l=xxx-0306242338Z-2345
MSEXCH:IMS:xxxxx:xxxx:xxxxx 3500 (000B09AA) 500 Syntax error, command unrecognized

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Syntax error, command unrecognized

by Ann777 In reply to Syntax error, command unr ...

The 500 error that you are getting, is indicative of a miscommunication... some of the transmission got garbled in all probability.

http://www.wu-wien.ac.at:8082/rfc/rfc821.hyx/rfc821.13_b4.2._bSMTP_bREPLIES

(Please remove any embedded spaces from the above link when pasting it into your browser)

Have you been able to send/receive anything from the same e-mail address? Have you checked with the person you are sending to -- make sure the address has not changed or they are not havingprobles that they know of with their Internet connectivity or their mail server?

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