From 4e03d4134202b117a29ecf5933a7a55e2a8532a4 Mon Sep 17 00:00:00 2001 From: Kaarle Ritvanen Date: Sun, 9 Feb 2014 09:49:36 +0100 Subject: sendmail: use FQDN in default envelope sender RFC 5321 requires the return path to be supplied with a proper domain name. Signed-off-by: Kaarle Ritvanen Signed-off-by: Denys Vlasenko --- mailutils/sendmail.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c index 824109d..9455b4e 100644 --- a/mailutils/sendmail.c +++ b/mailutils/sendmail.c @@ -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); -- cgit v1.1