RE: SMTP Protocol Error

  • From: "Mark Fugatt" <mark@xxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 15 Aug 2003 13:16:28 -0400

Its because you have no Reverse DNS zone configured on your public DNS
server for your domain, AOL and a number of other companies perform a
reverse lookup on all incoming mail and if they cannot find a reverse lookup
zone they reject the message, so you have two options:

1. get someone to configure a reverse DNS zone for your domain
2. Create an SMTP connector with the address space of AOL.COM and have it
send the mail out via a SmartHost that does have a reverse DNS zone
configured (i.e. your ISP).

Mark Fugatt 
MCT, MCSE, Microsoft Exchange MVP 
Pentech Office Solutions Inc 
Tel:  585 586 3890
Cell: 585 576 4750
Fax:  585 249 0316 

-----Original Message-----
From: Shawn Moua [mailto:smoua@xxxxxxxxxxxxxxx] 
Sent: Friday, August 15, 2003 1:02 PM
To: [ExchangeList]

I am getting the below message when trying to email to AOL users.  Any
clues?  Receiving from them is fine.  Thanks!  

The following recipient(s) could not be reached:
MstrsSyrah@xxxxxxx on 8/14/2003 10:04 AM
Could not deliver the message in the time limit specified.  Please retry
or contact your administrator.< #4.4.7>


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