Networking - Telnet SMTP port 25 - Asked By David on 14-Feb-11 10:21 AM


I am using telnet 25, but I got 530. 5.7.0 authentication required. How to fix it.


Ravinder Jamgotre replied to David on 04-May-11 10:39 AM
look like the SMTP port is using an authenctiocation method, try Telnet on port 587 this is the SMTP ssl port.

or if you want to use port 25 removed the authentication required from the configuration on exchange