Exim version 4.94.2
This looks like a bug with "reverse_host_lookup" and hosts that have
both an A and AAAA record in DNS.
Recently added the following rule in an SMTP connect ACL:
defer !verify = reverse_host_lookup/defer_ok
log_message = PTR invalid for $sender_host_address
and we are seeing IPv6 senders with valid PTR's and matching AAAA's for
that host hit the rule:
2021-06-24 14:29:03 H=[2602:ff1c:1:80::50]:60631 temporarily rejected
connection in "connect" ACL: PTR invalid for 2602:ff1c:1:80::50: host
lookup failed (2602:ff1c:1:80::50 does not match any IP address for
mta4.pr.judicialwatch.org)
But clearly in DNS, an A and AAAA exists...
host mta4.pr.judicialwatch.org
mta4.pr.judicialwatch.org has address 192.107.243.81
mta4.pr.judicialwatch.org has IPv6 address 2602:ff1c:1:80::50
Bug? Anyone else confirm?
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