Comment 59 for bug 148362

I would really want to see a solution to this problem, as I'm constantly
confronted to it with my laptop. Nevertheless, I don't think the idea to try
sending the mail to all servers is really a good idea. If I have a mail with an
attachment of 1 MB, I do not want it to send it uselessly two or three times.

I have seen a better solution in KMail/Kontact: it can show a list of all
configured SMTP-servers in the compose window (just below the To-address), so
you can easily choose your SMTP-server on a per mail setting, or even type in a
complete custom SMTP-server. It also has the possibility to set a default
SMTP-server depending on the From-address you choose, which is very handy (If
I'm writing an e-mail with my work address identity, there's much chance I'm at
work and I have to use my work's SMTP-server).