On Tue, Dec 03, 2019 at 04:41:27PM GMT, Chris Bennett wrote: > I have been fixing some problems with emails between two of my servers. > At the time I had /etc/hosts file empty except for localhost. > > While sending emails, I got several of errors in maillog like these: > > Dec 2 22:36:28 freedomforlife smtpd[78001]: cd3e9bc4ab696630 smtp connected > address=172.58.46.253 host=<unknown> > Dec 2 22:36:28 freedomforlife smtpd[78001]: cd3e9bc4ab696630 smtp > failed-command command="" result="550 no rDNS is so 80s" > Dec 2 22:36:28 freedomforlife smtpd[78001]: cd3e9bc4ab696630 smtp > disconnected reason=quit > > 172.58.46.253 is an IP for T-mobile. Which I use the WiFi hotspot to use SSH > from. > This was a previous IP I had used before, not on the session in progress. > I found several other T-Mobile addresses being used in maillog that were not > current sessions. > > I don't know what to make of this. I rebooted both servers after emptying > /etc/hosts. > > resolv.conf has: > > lookup file bind > nameserver 8.8.8.8 > nameserver 8.8.4.4 > > on this server. > > What is going on here? How could this possibly be happening? > > Chris Bennett >
Hi Chris, Is rdns anywhere in your smtpd.conf? You forgot to attach, so only guessing here... Regards, Raf
