Thank you both.  I've been doing some further "dig"ing and it seems that the nameservers that are supposed to be being used, aren't always - instead different nameservers (ns1.nns365.com, ns2.nns365.com) are being used.  Their whois seems to be correct (ns1.csiplhosting.net, ns2.csiplhosting.net), so I'm still rather puzzled as to why this is...

Gavin

On 31/12/2012 15:45, James Gregory wrote:
There seem to be several issues actually:

1) the MX records are sometimes there, and sometimes not...
dig kohinoorfoods.co.uk MX
from my machine (using Google DNS), the MX records are present. >From my Bitfolk VPS, they are missing.

2) While they have two MX records, they both point to the same IP address (85.119.248.7) and that machine doesn't appear to be accepting SMTP requests (telnet a.mx.apm-internet.net 25 seems to fail to connect)

James


On 31 December 2012 15:39, Daniel Case <danielcase10@gmail.com> wrote:

It looks like a problem on their end to me, it seems to be finding an ip address okay but their server is refusing the connection.....

On 31 Dec 2012 15:34, "Gavin Westwood" <bitfolk-lists@gavinwestwood.me.uk> wrote:
I'm having some odd issues with one of my clients not being able to send emails to the domain kohinoorfoods.co.uk via my server.

From Exim's logs:

2012-12-31 12:01:09 1Tpe3E-0001wT-Fy kohinoorfoods.co.uk [50.57.203.17]
Connection refused
2012-12-31 12:01:09 1Tpe3E-0001wT-Fy == xxx@kohinoorfoods.co.uk
R=dnslookup T=remote_smtp defer (111): Connection refused
2012-12-31 12:01:09 1Tpe3E-0001wT-Fy == yyy@kohinoorfoods.co.uk
R=dnslookup T=remote_smtp defer (111): Connection refused
2012-12-31 12:01:09 1Tpe3E-0001wT-Fy == zzz@kohinoorfoods.co.uk
R=dnslookup T=remote_smtp defer (111): Connection refused

Oddly they can send mail to them from their Blackberry, but to me their DNS looks wrong - no MX records for a start (ip is of their web server).

I checked the following two websites to verify that it wasn't just me:

http://centralops.net/co/DomainDossier.aspx?addr=kohinoorfoods.co.ukanddom_dns=trueandsvc_scan=true

http://dnscheck.iis.se/?time=1356957861&id=2916138&view=advanced&test=standard

However their IT support advise: "Looking at their logs it appears that when they are doing the DNS lookup to find the MX records for your domain its unable to find any records, this to me indicates a problem with their DNS server, the site they have used to check http://centralops.net doesn’t seem to find any MX records for your domain, but if I google MX Lookup and run the same test from at least the top 5 MX Lookup sites I can successfully see that the MX records are a.mx.apm-internet.net and b.mx.apm-internet.net

As there is on one person who seems to be having this problem I would suggest therefore that the problem is actually with the DNS servers that they are using to route mail out, if multiple places were reporting the same problem then it may be a problem with whoever hosts your domain."


Can anyone else verify that this isn't just a problem with my server?

Thanks

Gavin


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