Ispconfig2 : Email users cannot connect after static ip change

Hi all,
I changed Location to my server, (same server, same internal ip, new location, new static ip).
I changed all old ip adresses (DNS Manager) to the new static ip adress.
Web sites works fine, but I email users cannot connect to their mailboxes from the network (It refuses to connect)
I CAN connect from the internal network (eg. it works if i initiate a new (or reconnect to an old) user).
From another internal ip emails work fine, I can receive emails and see the old ones ...

Any ideas, how to investigate / solve this problem ?

Thanks in advance...
/P.

 

Did you adjust the port forwarding on your router?

 

... you seem to be right ...

My router ports were 25-100,...,
(I assume that postfix uses port 110)

Thanks again ...

/Petros

 

110 is for POP3. Postfix uses port 25.

 

It worked ... port 25 was open but not 110 ...

Thanks falko

/Petros