Hey yall, I just found out that there is a dedicated OpenSMTPD mailing list, so I will address my issue here also.
Thanks for any help! Date: Sun, 12 Sep 2021 23:28:07 +0200 From: Simon Hoffmann <open...@simonhoffmann.net> To: m...@openbsd.org Subject: OpenSMTPd: Ignoring /etc/hosts file? Hey yall, in my smtpd.conf file I have "relay smtps://host.domain.tld" host.domain.tld does resolve to a public IP, and this needs to be a public IP on public DNS. However, OpenSMTPd needs to relay to the local IP address of the smarthost. Since I have no DNS server running on that network, and i dont want to setup a DNS server only for OpenSMTPd, I added an enty to /etc/hosts, assigning the local IP to the FQDN. When i ping the FQDN it correctly resolves to the internal IP of the smarthost. However, OpenSMTPd ignores the entry in /etc/hosts and still tries to connect to the public IP of the host. Is this known that OpenSMTPd ingores /etc/hosts? Or is this a problem on Debian? Is there a workaround? Specifying "relay smtps://192.168.158.1" will not work, as the private IP is not part of the Cert. Can I force OpenSMTPd to use the internal IP? Can I disable Cert checking for the smarthost? Thanks! System details: root@mx01:~# lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 11 (bullseye) Release: 11 Codename: bullseye root@mx01:~# smtpd -h version: OpenSMTPD 6.8.0p2 usage: smtpd [-dFhnv] [-D macro=value] [-f file] [-P system] [-T trace] root@mx01:~# cat /etc/network/interfaces # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). source /etc/network/interfaces.d/* # The loopback network interface auto lo iface lo inet loopback # The primary network interface allow-hotplug ens192 iface ens192 inet dhcp Any info else you need? Cheers, Simon ----- End forwarded message -----
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