POL-1153....

I get this error when trying to update.
WIN 7
Run through Windower ver.4 as Admin
Ports 25,80,110,443,50000-65535 TCP
50000-65535 UDP
opened.
Only dat mods are the map packs.

The error is being triggered on random ROM's including
254/68, 177/52(several times on this one.), 118/100....

I'm about to put my laptop into DMZ on the router and shutdown windows firewall for the update but failing that, I'm stumped.

Any help would be appreciated.

DMZ and no firewall seemed to do the trick.
May have been a conflict with SMTP server that I had recently allowed as it uses port 110 as well.