my default gateway is causing a 4.7.1 rejection on all inbound
Posted: 13 Mar 2019 01:44
I'm trying to set up version 3.0.2.6, using my old system as a template (EFA, but years old and not updated).
I changed the NAT on my firewall to direct incoming mail to the new EFA device and I'm getting the following error on ALL incoming emails:
NOQUEUE: reject: RCPT from unknown[10.5.4.244]: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [10.5.4.244]; from=<return@spammer.com> to=<me@mydomain.com> proto=ESMTP helo=<spammer.com>
10.5.4.244 is my default gateway--the internal IP of my firewall.
I understand this is supposed to be a rDNS issue, but how could I be getting this with my firewall?
Thanks in advance
I changed the NAT on my firewall to direct incoming mail to the new EFA device and I'm getting the following error on ALL incoming emails:
NOQUEUE: reject: RCPT from unknown[10.5.4.244]: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [10.5.4.244]; from=<return@spammer.com> to=<me@mydomain.com> proto=ESMTP helo=<spammer.com>
10.5.4.244 is my default gateway--the internal IP of my firewall.
I understand this is supposed to be a rDNS issue, but how could I be getting this with my firewall?
Thanks in advance