On 26 Jan 2021, at 10:46, Ruben Safir wrote:
I am getting this strange rejections to talk to NYC government
Final-Recipient: rfc822; cdeut...@council.nyc.gov
Original-Recipient: rfc822;cdeut...@council.nyc.gov
Action: delayed
Status: 4.4.3
Diagnostic-Code: X-Postfix; delivery temporarily suspended: Host or
domain name
not found. Name service error for name=mx2.nycdoitt.iphmx.com
type=A: Host not found, try again
Will-Retry-Until: Sun, 31 Jan 2021 04:42:53 -0500 (EST)
dig mx2.nycdoitt.iphmx.com
[... list of A records snipped ...]
Assuming that the "Diagnostic-Code" field of the rejection message is in
fact the real reason for the failure and not doing something thatb
mimics DNS failure or tells outright lies, this indicates that their DNS
resolver is broken. The fact that they are replying with a temporary
code means that they are getting a SERVFAIL response or a timeout when
trying to resolve mx2.nycdoitt.iphmx.com.
Nothing you can do technically can fix this. They need to make their DNS
resolution function properly.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
