I am new to NETHSERVER and was using the last few days to get familiar with it. I was using ZENTYAL for quite a while, but I changed to NETSERVER due to the RPi support. I am quite satisfied and almost all what I wanted is running excellent.
However, I was running into one problem I was unable to solve:
I use DAVMAIL on another RPi what connects through a CISCO tunnel to our university systems where ONLY EXCHANGE is running. That is NOT reachable from the public Internet. DAVMAIL is offering POP3, IMAP and related protocols from ports, which are 1000 higher then standard, e.g. 1110, 1143, etc …
With the usual email MUAs and also with the ZENTYAL connector reaching those ports is no problem. I tried the same in NethServer and failed due to the lack of a seperate port field in the dialog …
So, l how to do that without digging too deep into the system … ?
Tnx for your help,