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Re: Making users to use port 587 for submission emails





--On 10. september 2005 9:00 -0500 Mike Klinke <lsomike futzin com> wrote:

On Saturday 10 September 2005 04:48, Sasa Stupar wrote:
Hi!

I am running Sendmail 8.13.4 on FC4 with cyrus2. I have
configured sendmail to listen on ports 25 and 587. Since all of
the client mail software use port 25 by default instead of 587,
how do I make users to use 587 and deny access to 25? Something
like: when they try to connect to port 25, they get back error -
you are not a server so you must use port 587. Any idea?

Regards,
Sasa

If you don't wish to have other servers connecting to deliver mail to this box don't allow port 25 through the firewall and your users will get the hint that port 587 is required.

I assume that you use port 587 for the convenience of those users
who are roaming through ISP's that have blocked port 25.

Why would you care if a roaming user connects to port 25 when
connecting from an ISP that doesn't block port 25?

Regards, Mike Klinke

Normally port 25 is used for server-to-server connection and port 587 is for users to submit their messages.
My ISp doesn't block port 25, but I'd like to have things like they should be.


Regards,
Sasa



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