I had to flush the queue to send the mail to the mailing list. Anyway, I can reboot again later. Here is the maillog after stopping/starting sendmail, which one flush the queue. Jul 14 18:14:02 P4 sendmail[3174]: alias database /etc/aliases rebuilt by root Jul 14 18:14:02 P4 sendmail[3174]: /etc/aliases: 69 aliases, longest 10 bytes, 679 bytes total Jul 14 18:14:02 P4 sendmail[3179]: starting daemon (8.12.11): SMTP+queueing@00:05:00 Jul 14 18:14:02 P4 sendmail[3179]: STARTTLS=server: file /etc/mail/certs/cert.pem unsafe: No such file or directory Jul 14 18:14:02 P4 sm-msp-queue[3188]: starting daemon (8.12.11): queueing@00:05:00 Jul 14 18:14:19 P4 sendmail[3180]: i6EBDYF1003132: to=<fedora-list@xxxxxxxxxx>, delay=00:00:45, xdelay=00:00:14, mailer=esmtp, pri=123187, relay=mx3.redhat.com. [66.187.233.32], dsn=2.0.0, stat=Sent (i6EBECXn004323 Message accepted for delivery) Jul 14 18:14:27 P4 sendmail[3180]: i6EB0ihR002857: to=<phd2@xxxxxxxxxxxxxx>, delay=00:13:42, xdelay=00:00:08, mailer=esmtp, pri=390483, relay=mx.online.net. [212.27.35.93], dsn=2.0.0, stat=Sent (ok 1089803664 qp 24 The main difference I can see now is that the relay is different. I was localhost, and not it is th relay of the people receiving the mail. I remember having some troubles like this at the beginning of RH9, and I think the answer was the /etc/hosts file to modify. Philippe -- Philippe, Chiangmai, Thailand