connection by phone : proble

[pppplus]

Hi

I've a problem, to connect by phone to my email boxes.
I've CSF activated on several servers / VPS.

Fo some servers or VPS, I can connect to mail boxes with POP, but impossible for some others.

I just compare 2 VPS on the same server :
- 1st one : I can connect with POP
- 2nd one : I can't

I compare csf.conf, and report all rules from 1st to 2nd
I've always the same problem.

If I stop CSF, I can connect with POP.

Do you have an idea for me ?
(the 2 VPS are on Centos 6 - 64 bits, almost same configuration)
I think, it's a problem with CSF, because when I stop it, it's ok.

[PetruTiglar]

Try whitelisting your IP address on the servers. You may have triggered a block.