> I'm trying to post and if I use more than one line,
> it's a 'malformed message'. 
> Any ideas? 

I frequently put multi-line messages in posts:

aasdlfkjh asldkfjh asldkfjh aslkdjhf alsdkf halsdkjf hasldkf halskdhf aslkdfh
aslkdf halksdjf halksdf halsdkjhf alsdkjhf alksdf halksdf hlaksdf hlaskdf
halskdf hlasdkf hlaksdh alsdkf halksdhf

Post Message text states don't paste HTML.