twitter should be whitelisted

[foxharp]

a series of connections from twitter's servers over a couple of days recently resulted in this (after distilling down to just the postfix "connect from" messages):

 connect from spring-chicken-bl.twitter.com
 connect from spring-chicken-bn.twitter.com
 connect from spruce-goose-ag.twitter.com
 connect from spruce-goose-ar.twitter.com
 connect from spruce-goose-ar.twitter.com
 connect from spring-chicken-av.twitter.com
 connect from spring-chicken-bi.twitter.com
 connect from spring-chicken-ae.twitter.com
 connect from spring-chicken-aw.twitter.com
 connect from spring-chicken-as.twitter.com
 connect from spring-chicken-av.twitter.com
 connect from spruce-goose-aj.twitter.com
 connect from spruce-goose-af.twitter.com
 connect from spring-chicken-bn.twitter.com
 connect from spring-chicken-bi.twitter.com

i added this:
/^.*\.twitter.com$/
to my /etc/postgrey/whitelist_clients.local, but i'm no expert, and i've not re-tested.