Re: Host not found?

2020-10-18 Thread Viktor Dukhovni
On Sun, Oct 18, 2020 at 04:07:24PM -0400, Joey J wrote: > I'm trying to understand why this is telling me host not found. > On that same server if I nslookup the ip it does resolve. Only in the IP -> name direction. The name -> IP direction fails. And it seems you've configured: reject_unknown_c

Re: Host not found?

2020-10-18 Thread Patrick Chemla
No MX server for client.com: # nslookup -type=mx client.com Server: 8.8.8.8 Address:    8.8.8.8#53 Non-authoritative answer: *** Can't find client.com: No answer Le 18/10/2020 à 23:16, Richard a écrit 

Re: Host not found?

2020-10-18 Thread Richard
> Date: Sunday, October 18, 2020 16:07:24 -0400 > From: Joey J > > Hello all, > > I'm trying to understand why this is telling me host not found. > On that same server if I nslookup the ip it does resolve. > > Oct 18 16:00:51 mgw postfix/smtpd[24119]: NOQUEUE: reject: RCPT from > unknown[199.

Host not found?

2020-10-18 Thread Joey J
Hello all, I'm trying to understand why this is telling me host not found. On that same server if I nslookup the ip it does resolve. Oct 18 16:00:51 mgw postfix/smtpd[24119]: NOQUEUE: reject: RCPT from unknown[199.5.50.180]: 450 4.7.1 : Helo command rejected: Host not found; from= to= proto=ESMTP

Re: Mail server recently became an open relay

2020-10-18 Thread John Fawcett
On 18/10/2020 06:32, Viktor Dukhovni wrote: > On Sat, Oct 17, 2020 at 09:14:50PM -0700, Rich Wales wrote: > >> Thanks. I was actually thinking something of the sort myself -- my >> server is indeed behind a separate firewall appliance. >> >> However, other e-mail (such as your recent reply to my i