This is because you are using NT to do it. A firewall will enable all
outgoing client UDP or TCP or both connections >1024 for such things. They
block them incoming. Win2k/NT without Firewall software does not do a very
good job of Firewalling. Buy a firewall for your server.
Craig.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of John Cesta -
Lists
Sent: Monday, March 26, 2001 4:12 PM
To: [EMAIL PROTECTED]
Subject: RE: [IMail Forum] Out at sea...cannot find a port!
> You do *NOT* need ports greater than or equal to 1024 open
> (except for the ones you want, such as 8383 for web messaging),
> unless you have a really dumb firewall.
>
> When IMail accepts an incoming SMTP connection, the local port is
> 25, and the remote port is something typically greater than 1024.
> When IMail makes an outgoing SMTP connection, it uses a port
> greater than 1024, but connects to port 25. Whether the mail is
> incoming or outgoing, it is using port 25. The firewall will see
> the port 25 and accept the connection, regardless of which
> ephermeral port (>=1024) is used.
I guess I don't completely understnd then why imail wouldn't or couldn't
send mail when we locked out ports in the control panel > network > tcpip >
advanced > enable security area. We kept open what we needed to provide:
web
dns
ftp
and all the ports that Ipswitch's article defined as below.
When we re-enabled all the ports again imail worked fine.
Don't know what port it was looking for but these ports were open as well:
Answer/Solution: IMail uses the following TCP ports:
SMTP - 25
Password - 106
POP3 - 110
IMAP4 - 143
LDAP - 389
Web Administration - 8181 (default, configurable)
Web Messaging - 8383 (default, configurable)
John
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Scott Perry
> Sent: Monday, March 26, 2001 2:21 PM
> To: [EMAIL PROTECTED]
> Subject: RE: [IMail Forum] Out at sea...cannot find a port!
>
>
> >> gotta open tcp ports > 1024 for sending mail
> >
> >Do you mean *just* port 1024 or all ports greater than 1024?
> >
> >This port we did not have open. We have the standard ports open for:
>
> You do *NOT* need ports greater than or equal to 1024 open
> (except for the ones you want, such as 8383 for web messaging),
> unless you have a really dumb firewall.
>
> When IMail accepts an incoming SMTP connection, the local port is
> 25, and the remote port is something typically greater than 1024.
> When IMail makes an outgoing SMTP connection, it uses a port
> greater than 1024, but connects to port 25. Whether the mail is
> incoming or outgoing, it is using port 25. The firewall will see
> the port 25 and accept the connection, regardless of which
> ephermeral port (>=1024) is used.
>
>
> --
> -Scott
>
> Declude: Anti-virus and Anti-spam solutions for IMail.
> http://www.declude.com
> --
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> An Archive of this list is available at:
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>
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