RE: 553 error


> -----Original Message-----
> From: Dee [mailto:deea@xxxxxxxx] 
> Sent: Wednesday, February 04, 2004 11:26 AM
> To: [ExchangeList]
> Subject: [exchangelist] 553 error
> 
> 
> http://www.MSExchange.org/
> 
> I believe this is either a problem on the recipient's end, or 
> they have some way to block unwanted emails that I am not 
> aware of, but I thought I would check in with the group to 
> see if you have had experience on cleaning this one up:
> 
> Your message did not reach some or all of the intended 
> recipients. The following recipient(s) could not be reached: 
> Rbryant@xxxxxxxxx on 2/4/2004 9:42 AM There was a SMTP 
> communication problem with the recipient's email server. 
> Please contact your system administrator.
> <mail.tsta.org #5.5.0 smtp;553 Your computer does not have a 
> hostname, you must AUTHenticate>


Try telneting into your mail server on port 25 and see how it identifies
itself.
The server should id itself with either a FQDN or the IP address in
brackets.

This is off the top of my head so checking the RFCs or another source might
be wise, I am at home and Cox.net blocks port 25 or I would have checked
myself.


John

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