Le Tue, Dec 09, 2025 at 05:32:24PM +0100, Stéphane Guedon a écrit : > Hello > > When looking at the manual to smtpd.conf, on "action" and "relay" > nothing says the relay host has to be ipv4. > > Yet, when writing my conf', it definitely looks like not to be possible > to relay to an ipv6-only host (in my case, I wanted to dedicate a > specific ipv6 address on the relay host). > > Is it possible that the relay function only sends mail to ipv4 addresses ? > > Thanks for your help and comments. > > Hi,
What version of OpenSMTPD are you using? The portable source tree had a typo in it that caused IPv6 relaying to fail when using IPv6 addresses in src. See https://github.com/OpenSMTPD/OpenSMTPD/pull/1275/files This should be fixed in version 7.7.0p0.
