That A record was only up there for 5 minutes, LOL, I was redoing the zone
file and mistyped then when checking realised \i had made a booboo there
and redid it. Must have been then that it was picked up. (It was very
late)
Here was the error message
bombay.duck12@???>: host mx.lb.btinternet.com[213.120.69.89]
refused to talk to me: 421 re-prd-rgin-002.btmx-prd.synchronoss.net
Service
not available - no PTR record for 85.119.84.35
<bea.jay@???>: host mx.tb.ukmail.iss.as9143.net[212.54.56.11]
refused
to talk to me: 421 mx4.tb.ukmail.iss.as9143.net
mx4.tb.ukmail.iss.as9143.net MXIN108 Failure to determine Reverse DNS
for
your IP 85.119.84.35. Fix or retry later.
;id=e02ZnsEO3k7hk;sid=e02ZnsEO3k7hk;mta=mx4.tb;d=20220411;t=214936[CET];ipsrc=85.119.84.35;
<joyron.b@???>: host mx.tb.ukmail.iss.as9143.net[212.54.56.11]
refused
to talk to me: 421 mx4.tb.ukmail.iss.as9143.net
mx4.tb.ukmail.iss.as9143.net MXIN108 Failure to determine Reverse DNS
for
your IP 85.119.84.35. Fix or retry later.
;id=e02ZnsEO3k7hk;sid=e02ZnsEO3k7hk;mta=mx4.tb;d=20220411;t=214936[CET];ipsrc=85.119.84.35;
Here is the reverse zone file ( /var/lib/bind/35-32.84.119.85) for the IP
address
$ORIGIN .
$TTL 600 ; 10 minutes
35.84.119.85.in-addr.arpa. IN SOA ns2.keiths-place.co.uk.
keith.keiths-place.co.uk. (
2019120307
600
300
1209600
300 )
NS ns1.keiths-place.co.uk.
NS ns2.keiths-place.co.uk.
NS ns3.keiths-place.co.uk.
$ORIGIN 35.84.119.85.in-addr.arpa.
PTR keynesmail.com.
PTR www.keynesmail.com.
PTR mx10.keynesmail.com.
PTR webmail.keynesmail.com.
PTR aakanee.com.
PTR www.aakanee.com.
PTR leightonbuzzard.net.
PTR keiths.space.
PTR www.keiths.space.
PTR splog.keiths.space.
PTR ns1.keiths-place.co.uk.
PTR www.leightonbuzzard.net.
PTR newportpagnell.net.
PTR www.newportpagnell.net.
PTR mail.wingravegolf.co.uk.
PTR webmail.wingravegolf.co.uk.
And the forward zone (keynesmail.com)
$ttl 38400
keynesmail.com. IN SOA ns3.keiths-place.co.uk. keithwilliamsnp.gmail.com. (
2019120313
10800
3600
604800
38400 )
keynesmail.com. IN NS ns3.keiths-place.co.uk.
keynesmail.com. IN NS ns1.keiths-place.co.uk.
keynesmail.com. IN NS ns2.keiths-place.co.uk.
keynesmail.com. IN A 85.119.84.35
www.keynesmail.com. IN A 85.119.84.35
webmail.keynesmail.com. IN A 85.119.84.35
keynesmail.com. IN MX 10 keynesmail.com.
keynesmail.com. IN AAAA 2001:ba8:1f1:f309::2
www.keynesmail.com. IN AAAA 2001:ba8:1f1:f309::2
webmail.keynesmail.com. IN AAAA 2001:ba8:1f1:f309::2
adminmail.keynesmail.com. IN A 85.119.84.35
mx10.keynesmail.com. IN A 85.119.84.35
35.84.119.85.in-addr.arpa. IN PTR mx10.keynesmail.com.
35.84.119.85.in-addr.arpa. IN PTR keynesmail.com.
_dmarc.keynesmail.com. IN TXT "v=DMARC1; p=none; pct=90; adkim=r; aspf=s"
The formatting seems to have gone haywire as I copied and pasted, there.
I am totally stumped, IPv6 works just fine
Keith
On Tue, 12 Apr 2022 at 07:28, John Winters <john@???> wrote:
> On 12/04/2022 01:12, Andy Smith wrote:
> [snip]
> > Note that it is not really important that the reverse and forward
> > DNS records match anything that is in the email headers, just that
> > they match *each other* (reverse DNS resolves to a host name that
> > also resolves back to the same IP address).
>
> This used to be the case but I hit a problem the other day of an ISP who
> insisted not only that they matched each other but that they also
> matched the name given in the HELO part of the SMTP dialogue.
>
> This was a new requirement from that ISP which caused email to bounce.
> A nuisance when you have several logical mail servers behind a single
> IPv4 address.
>
> So much easier with ISPs who are up to date and use IPv6.
>
> John
>
> --
> Xronos Scheduler - https://xronos.uk/ | i = (free(NULL), i++);
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>
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