During the migration from LMS 2.6 to LMS 3.1 I found a strange behaviour of the new LMS. When I try to configure the SMTP server entry with the same value as it was in LMS 2.6 he tells me: 'Invalid IP address or server name for mail server. Please enter a valid SMTP server name or leave the SMTP Server field blank.'
The SMTP server responds to ping and to telnet on port 25. Also the old LMS is still using this SMTP server, but the LMS3.1 doesn't accept it.
Why and how could I fix this?
Thanks in advance!
You'll need to capture a sniffer trace of SMTP traffic between the LMS and SMTP servers when trying to apply the settings. This will show where the problem lies.
This sounds like CSCsm10925, but it is fixed in LMS 3.1. Are you sure you have 3.1 and not 3.0.1?
If you do, then the problem is most likely that while the mail server is listening on tcp/25, it is not configured to accept a HELO from the LMS server.