-To specify a fallback MUA in case local port 25 doesn't respond, this is
-not recommended, because you'll usually see differences between MTA and
-MDA use. If you wish to proceed nonetheless, do one of:
-
- configure --enable-fallback=procmail
- configure --enable-fallback=sendmail
-
-A disadvantage of using procmail is that local alias expansion
-according to /etc/aliases won't get done if we fall back to it.