On Fri, 16 Jul 2021 14:30:43 -0400 Thirumurugan Kalapatti <kovair...@gmail.com> wrote:
> Jul 16 12:23:30 hostM postfix/smtp[698664]: 7A2A020ECDC6: > to=<joe@hostb>, relay=none, delay=0.05, delays=0.02/0.03/0/0, > dsn=5.4.4, status=bounced (Host or domain name not found. Name > service error for name=hostb type=A: Host not found) > Perhaps use /etc/hosts temporarily for hostname resolution while the nameserver issue is resolved? Your nameserver may only be able to resolve "hostb.yourdomain.com" and not "hostb" itself. See if your dns admin can fix that. --
