Portforwarding hmailserver and roundcube (and vpn GRE)

[arnada]

Hi,

I'm currently using one of my Dell Poweredge servers with pfsense and it's working allmost 100%.

My first problem is that I use zpanel which is a package with hmailserver, roundcube, apache etc.

Now on the server without a firewall everything works but the server behind the pfsense is fighting against me a bit.

Email clients like Outlook works without problem but when I try to send a e-mail from roundcube I just get "can't send message", like I said before, the other server works great.

My second problem is related to GRE, I have a VPN server behind the firewall but I can only connect with one user when I'm behind the firewall, When I'm outside there is no problems.

Thanks for your time!

Best regards

EDIT:

Here's my Rules

WAN TCP/UDP * * WAN address 2525 192.168.10.5 2525
WAN TCP/UDP * * WAN address 25 (SMTP) 192.168.10.5 25 (SMTP)