[SC-Help] disinformation newsletter that i subscribe to is suddently getting flagged by spamcop

[Rev. Guido S. DeLuxe, DD, LDD, OGG, OHS, ST, MI, MSU]

this is a little complex, so bear with me...

i'm subscribed to the disinformation mailing list. have been for several
years now. it has only recently started being a problem... i'd say maybe
a month or so ago. someone, and i think it's spamcop, is letting the
mailing list through (probably because i have whitelisted it on webmail),
but it's getting flagged as spam by spam assassin, and when it arrives on
my machine, instead of getting routed to the disinformation mailbox, it
gets routed to the spam mailbox. i'm sure that it's not my mailserver that
is flagging it as spam, because on my mailserver i have a procmail rule
that makes an end run around spam assassin when it encounters a sender
address at disinfo dot com. the only other place that i know of that's
filtering my mail through spam assassin is spamcop.

what i need to know is:

1) how do i essentially set up a procmail rule on spamcop, like i did on
my own mailserver, or otherwise convince the version of spam assassin that
spamcop is running to ignore the disinformation newsletter?

2) what's different about the disinformation newsletter or about the
version of spam assassin that's running on spamcop's mailservers, that
causes disinfo to be flagged as spam now, when it wasn't getting flagged
until around a month ago?