[Mailman-Users] Mailman messages treated as Spam

[Scott P. Miller]

Many of my users are complaining that commercial mail services - yahoo, 
hotmail, aol, clients with Postini - have their Mailman lists treated as 
Spam. 

Is there anything I can do to change that?  I know the recepient can 
setup filters and whitelist, but I often use this for company mail 
annoucements where the end recepient is getting it because they use the 
mailing list for work, but they aren't really swift enough to do much 
more than read.

Thanks,
Scott Miller