Send external mail true telnet

Dear Supprot

how do we avoid to send from telnet port 25

ex: mail from: user@domail1.com

rcpt to:user2@domain2.com

this is a security issue , how we avoid this

Regards

dayantha

Subject: open relay

Dear Support

according to your doc view, i can’t relay mail from one domain to another its says “relay reject from policy reson” this is ok , but my issue is , when i realy from gmail to my domain mail address its accept to send , why isit? i want to avoid this , ple help me

Regards

Dayantha

Subject: Talk to your Network Administrator…

Your Network Administrator should be able to make changes which prevent the use of Telnet on Port 25.

In the mean-time, you could look into implementing SMTP Inbound Controls & Inbound Relay Enforcement on your Domino Server.

See the topic “Preventing unauthorized SMTP hosts from using Domino as a relay” in the Lotus Administrator Help Database for more information.

Subject: open relay