Bug 3399

I have multiple accounts defined; about half enabled.  One of the accounts which is not enabled is used only to send -- it actually belongs to my business partner and is rarely used.  On occasion, I use it to send something for her.

However, if I receive a message where we are both targeted by the remote sender, there is a corner case which will cause the other account to be used as the account I'm replying from.

If the incoming message contains:

Cc: main_address, send_only_address

the reply works as expected.  However if it contains:

Cc: send_only_address, main_address

then, the reply will select the send-only account for the reply[all].

I've verified this by reversing an incoming message's Cc: addresses.  The bug is present no matter which folder the message resides in.