Fetching mails does not work (anymore) after we migrated from version 1.9 to 1.17
We have the version with the Shagen skin implemented.
On the previous version we had pop3 settings to our on premise exchange server, this was working very well and now we can't get it to work. We tried to connect to gmail addresses as well but no luck.
There is no firewall installed on our Linux Ubuntu 18.04 server, telnet to the server works like a charm
p.s. the version is 1.17 and not 1.17.* because of the preinstalled skin.
Please some help