Submission on Port 587 is reserved for email message submission as
specified in this url http://www.landfield.com/rfcs/rfc2476.html. Messages
received on this port are defined to be submissions. The protocol used is
ESMTP [SMTP-MTA, ESMTP], with additional restrictions as specified here.
It's used for ESMTP (considered a better choice than port 25 in most
instances - a lot of SMTP servers use both). Of course, note that the fact
that it says the service is submission means online that this is what the
IANA has reserved this port for so for maximum security be skeptical.
Thompson
-----Original Message-----
From: Wayne Stout [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 21, 2001 9:15 AM
To: expert
Subject: [expert] Question about Nmap scan results
Greetings everyone!
Last night I decided to run nmap on my system and got the following
results. I understand everything except for the submission service on
port 587. Anyone know what this is? Also, I'm not quite sure what port
1025 is, either.
One final question. Do I need to have sendmail installed to use
logcheck?
Thanks in advance,
Wayne
Port State Service
25/tcp open smtp
587/tcp open submission
631/tcp open unknown
1025/tcp open listen
6000/tcp open X11
