++ 25/05/15 12:48 -0400 - tor@t-3.net:
A lot of trouble would be prevented for exit node operators if, when they brought their relays up for the first time, they ensured that the exit policy rejected port 25. Even if they desire to run as unrestricted a relay as possible, in my experience, that one really should be rejected. It is the
Some (or most or even all) of the Leaseweb nodes didn't forward port 25. So, alltough you advice is a good one, it's not applicable to some (or most or even all) of the nodes that are discussed in this thread.