PMG Quarantine Selfservice Website dead

[LachCraft]

Hello colleagues,

I have the PMG up and running. As a final step, I wanted to unlock the "customer portal" for quarantined spam.

Here's what I have done:

• Configuration > Spam Detector > Quarantine: Lifetime set to 7, Auth mode set to Ticket, Style set to Verbose, Host set to none (basically my default domain), Port set to 59001, "From" email set to "postmaster....", Images enabled, Links enabled.
• Port forwarding for port 59001.

The email with the appropriate report is being sent out as expected. However, I cannot access the links, neither from the local network (for example 10.0.0.1:59001) nor from the internet.
When I run ss -tuln, I also don't see the port open in the list. Restarting the services and the server hasn't helped either.
root@smarthost:~# ss -tuln
Netid State Recv-Q Send-Q Local Address Port Peer Address Port Process
udp UNCONN 0 0 127.0.0.1:53 0.0.0.0:*
udp UNCONN 0 0 127.0.0.1:53 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:111 0.0.0.0:*
udp UNCONN 0 0 127.0.0.1:323 0.0.0.0:*
udp UNCONN 0 0 [::]:111 [::]:*
udp UNCONN 0 0 [::1]:323 [::]:*
tcp LISTEN 0 4096 0.0.0.0:111 0.0.0.0:*
tcp LISTEN 0 100 0.0.0.0:26 0.0.0.0:*
tcp LISTEN 0 100 0.0.0.0:25 0.0.0.0:*
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
tcp LISTEN 0 256 127.0.0.1:53 0.0.0.0:*
tcp LISTEN 0 256 127.0.0.1:53 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.1:85 0.0.0.0:*
tcp LISTEN 0 256 127.0.0.1:8953 0.0.0.0:*
tcp LISTEN 0 244 127.0.0.1:5432 0.0.0.0:*
tcp LISTEN 0 100 127.0.0.1:10025 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.1:10024 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.1:10023 0.0.0.0:*
tcp LISTEN 0 4096 127.0.0.1:10022 0.0.0.0:*
tcp LISTEN 0 4096 [::]:111 [::]:*
tcp LISTEN 0 100 [::]:26 [::]:*
tcp LISTEN 0 100 [::]:25 [::]:*
tcp LISTEN 0 128 [::]:22 [::]:*
tcp LISTEN 0 4096 *:8006 *:*
root@smarthost:~#

What am I missing?

Thanks!