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
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
> 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.
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
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
