🚀 go-pugleaf

Sven Kirmess <Sven.Kirmess@gmx.net> wrote:
> Mit 5.2 hatte ich keine Probleme. Wenn ich jetzt aber offline bin und
> eine Mail senden m�chte, so erhalte ich die folgende Fehlermeldung:
> "Sender domain must resolve"

For situations like this, where you are not all the time by default
on, I change a little the way I configure sendmail:

   - I basically disable any Internet processing (including DNS)
   - I set an IP address for the smart-host (the one of my ISP)

Basically, all mails remain in queue, when I am connected I do
a sendmail -q, which sends to the ISP immediately, and he does
the background delivery.

This removes much headaches. Also, the sendmail is configured to
not bind to the SMTP port (no -bd option), and thus is also
unvulnerable to attacks. Of course, mail must then be delivered
by POP or UUCP or any other non sendmail SMTP method (Internet -> me).