Trouble using :25 and :587 at the same time

I don't know what changed, as I used to receive mail from James in 
Thunderbird.  But recently it doesn't listen to 25, mostly because I 
inadvertently changed the bind port to :587 so the MUA could talk to 
it.  But that way I get no incoming mail.  Is there a place in the 
smtpserver.xml file or elsewhere that you can tell it to bind to :465 
and :587?  IMAP works fine but it has it's own file and bind-port sends 
stuff out quick-like.

Regards,

Steve