[MlMt] default account derived from context is not behaving?

[Eric Sharakan]

Hi, if I click on an external mailto: link to compose a new message in 
MM, the chosen From address is not right (or not what I think it should 
be).

For example, I'm clicking on a link to send an email to 
paul.xxx at companyZ.com.  One of my accounts is also with companyZ.com, 
but the chosen From address is not from that account, but from my 
comcast account.

I'm running r5574.

Thanks.

-Eric