List Charter and FAQ at:-----Original Message-----
From: Neil Ferguson [mailto:[EMAIL PROTECTED]]
Sent: Thursday, December 06, 2001 7:16 AM
To: MS-Exchange Admin Issues
Subject: RE: Port 113Martin,
I had this issue with my ISP - apparently many do use it. A lot of inbound / outbound SMTP traffic was being denied by the firewall. I found by allowing inbound traffic on this port from my public IP address and mapping it to my Exchange Server IP the problem went away.
Hope this helps
Neil
-----Original Message-----
From: Martin Blackstone [mailto:[EMAIL PROTECTED]]
Sent: 06 December 2001 14:22
To: MS-Exchange Admin Issues
Subject: Port 113
I am noticing a load of blocked port 113 attempts in my FW log since we have
started moving to Exch server.
I read the stuff below and wonder if anyone else is doing this?How port 113 can cause problems with your email
One system that still regularly attempts to use Authd is sendmail, a very
popular mail server. It will try to establish the userid of a user
initiating a connection to send mail. While it not requires a successful
reply to function, it will wait up to 5 minutes in its default configuration
for a reply from Authd.
Many firewalls are setup by default to not reply at all to connection
attempts. This will make sendmail wait the specified timeout duration before
accepting any mail. If you instead have the firewall reply with a
'connection rejected' message, the mail server will stop waiting and process
your mail right away.
So if you installed a firewall and have noticed that your email service has
gotten sluggish, see if there is a correlation between your sending mail and
your firewall logging accesses to port 113. If so, try opening up port 113
on your firewall so that the mail server will be happy.List Charter and FAQ at:
http://www.sunbelt-software.com/exchange_list_charter.htm
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List Charter and FAQ at:
http://www.sunbelt-software.com/exchange_list_charter.htm
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