RE: Authenticated Outgoing Mail

  • From: "Carl Houseman" <c.houseman@xxxxxxxxx>
  • To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 15 Sep 2005 18:24:42 -0400

Exchange 2003 can listen for SMTP connections on any port or ports.  I would
expect the same capability in E2K.

From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] 
Sent: Thursday, September 15, 2005 6:09 PM
To: [ExchangeList]
Subject: [exchangelist] RE: Authenticated Outgoing Mail

I am not sure if Exchange can be configured to listen on 587 in addition to
25, but it is accepting inbound authenticated connections is what you meant.


A work around (as long as your Exchange server is properly configured) is to
add an inbound rule to your firewall (you are running a firewall aren't you)
to redirect incoming port 587 traffic on the external interface to port 25
on the internal destination.


John T

eServices For You


-----Original Message-----
From: EIS Lists [mailto:eis_lists@xxxxxxxxxxxxx] 
Sent: Thursday, September 15, 2005 2:54 PM
To: [ExchangeList]
Subject: [exchangelist] Authenticated Outgoing Mail



We have several users who access their Exchange accounts via POP and SMTP.
Recently, several large ISPs have started blocking outbound traffic that
does not use their servers. Is there a way to tell Exchange 2000 to use
authenticated outbound connections (e.g., over port 587)?



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