[Mediawiki-l] My confirmation mail gets tagged as spam. Why and what to do?

[Platonides]

It's difficult to know why it gets tagged as spam, it depends on the 
internal system of the filter. You know, if anybody could send messages 
to the no-spam folder, spammers would continuously do it ;-)
Don't feel bad for remembering the users that the confirmation email may 
have been misplaced on the spam-box.
Also, many users clicking this-wasn't-spam will help you.
You can also try to improve your resistance of being tagged as spam 
implementing SPF.