RE: 553 error

  • From: "John Mason Jr." <John.Mason.Jr@xxxxxxxxxxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 4 Feb 2004 12:00:41 -0500

> -----Original Message-----
> From: Dee [mailto:deea@xxxxxxxx] 
> Sent: Wednesday, February 04, 2004 11:26 AM
> To: [ExchangeList]
> Subject: [exchangelist] 553 error
> 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.
> < #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
The server should id itself with either a FQDN or the IP address in

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


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