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sendmail: use FQDN in default envelope sender

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RFC 5321 requires the return path to be supplied with a proper domain
name.

Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Kaarle Ritvanen 2014-02-09 09:49:36 +01:00 committed by Denys Vlasenko
parent 744ee5db1c
commit 4e03d41342
1 changed files with 4 additions and 2 deletions
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6
mailutils/sendmail.c
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@ -326,7 +326,6 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
// we should start with modern EHLO
if (250 != smtp_checkp("EHLO %s", host, -1))
smtp_checkp("HELO %s", host, 250);
free(host);
// perform authentication
if (opts & OPT_a) {
@ -353,8 +352,11 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
// got no sender address? use auth name, then UID username as a last resort
if (!opt_from) {
opt_from = G.user ? G.user : xuid2uname(getuid());
opt_from = xasprintf("%s@%s",
G.user ? G.user : xuid2uname(getuid()),
xgethostbyname(host)->h_name);
}
free(host);
smtp_checkp("MAIL FROM:<%s>", opt_from, 250);