Re: fallback to "." when gethostname() yield an empty result

Hi Robert,

Running your test[1] on my test box without hostname[2], I get:

mail: S: 220 ulysses.gnu.org.ua ESMTP server ready
mail: C: EHLO [10.102.42.241]
[...irrelevant output omitted...]
mail: C: QUIT
mail: S: 221 2.0.0 ulysses.gnu.org.ua closing connection

and the message gets delivered correctly.

Perhaps I could get more insight into your problem if I saw your
config.log file.

Regards,
Sergey

[1] FWIW, the '--exec=setq mode=send' option is useless,
[2] hostname '' on GNU/Linus gives 'the specified hostname is
invalid'. I had to write a small program to clear the hostname instead.