> (but not my mail server - I try to be a good netizen)
Blocking sources of spam is part of being a "good netizen".
Being reachable by other admins is what I was referring to[1]. I do aggressively block pure-spam hosts, of course, but I can't consider FB one of those.
[1] I find it exceedingly unlikely that FB mail admins would need to reach me to troubleshoot something, but it is the principle.
I still get an endless stream of spam from them.
"Facebook - more AOL than AOL ever was."
[1] whatever that means, wrt them.