Strange Problem with Email after migration

ace2109

ace2109

ace2109

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Joined
28 Dec 2002
Posts
2,400
Location
Northern Ireland
Hi Guys,
I recently migrated a website onto our dedicated server. This website hosts their own email in house so I simply copied the DNS settings for this Domain from the previous host to our new server. Previous transfers have went smoothly with no problems but this domain can't seem to send and receive emails correctly.

It can send and receive to most other domains however their mail will drop out periodically and won't receive or send emails to a specific domain.

I have posted below the old and new settings and was wondering if you can see anything wrong.

OLD HOST SETTINGS


Uploaded with ImageShack.us

NEW DEDICATED SERVER SETTINGS


Uploaded with ImageShack.us
 
Ok so I might have found the solution or another problem, im not sure.

Our dedicated server has 2 name servers which we setup, however these name servers dont have any MX records associated with it? Could this be the problem? What would the MX records need to be?
 
Is that the actual domain?

If so, there's something wrong as a checker shows you are missing lots. Is the zone for the domain setup on the nameservers (ns1.bnlserver.co.uk / ns2.bnlserver.co.uk) listed by the checker?
 
Is the zone setup on them (ns1/ns2.bnlserver.co.uk) correctly? SOA, NS, A and MX records?

If not, where are the records in the 2nd JPEG? Is that a hosting CP but the name servers it creates the records on aren't actually authorative for the domain?
 
Im guessing not, I have just inherited this problem.

What should these records be? All hosting and mail are done from the same server, i have checked and this is the what is setup under the advanced DNS setting for the domains

ns1 and ns2 have separate A records pointing towards the servers IP address which I believe is correct.

There are no other records at all

Im guessing the MX records for the name servers should point to the server IP as well as this is where the email is hosted?

Not 100% sure about this so any help is much appreciated.
 
NS1 and NS2 are the same server, this hosts both mail and websites, all DNS Settings for each domain are setup within the PLESK control panel for the server.

There is no problem with other domains on the server, I have 3 that point towards googles mail servers and we host the mail for another 6 locally on the server, its literally just this one domain that the email doesnt work with.
 
There are problems for certain.

http://www.dollardns.net/cgi-bin/dn...f.org&type=A&class=IN&lr=12&submit=Send+Query

Code: 
Querying a.root-servers.net (198.41.0.4)... delegated
  Querying c0.org.afilias-nst.info (199.19.53.1)... delegated
    Querying ns1.bnlserver.co.uk (UNKNOWN)... resolve failure
    Querying ns2.bnlserver.co.uk (UNKNOWN)... resolve failure
Received non-authoritative response 

No Answer Records 
  
Authority Records (2) TTL Type Data 

--------------------------------------------------------------------------------
 
niyf.org 86400 NS ns1.bnlserver.co.uk 
niyf.org 86400 NS ns2.bnlserver.co.uk 

No Additional Records
 
If you have a look at this http://www.intodns.com/bnlproductions.co.uk

and this together http://www.intodns.com/niyf.org

On the bnlproductions.co.uk report you will see no serious errors however on the niyf.org domain there are however they are on the same server and were setup the same way with the only exception being their MX records are different.

I dont understand why on one it says the name servers are fine and yet the other it says there not?

The client hosts their own mail on a Windows Business Server box and can access it via webmail and through outlook
 
IntoDNS reports errors on BNLServer.co.uk though.

There is something odd going on, as CheckMyDNS can find MX records for niyf.org. That would go along with them getting some but not all e-mail.

{Edit}

FWIW, I can ping ns but not ns1 or ns2 from home (which goes via an Enta DNS server). NS1 / NS2 don't even resolve for me.
 
Last edited:
Can't see that helping IMHO.

I'd probably leave things for tonight to give changes chance to propagate and re-visit in the morning.
 
I did a complete DNS reset on the domain and set it back up but still no luck.

Thanks for your support guys, i will post back with my progress
 
Inbound mail delivery is defined by the MX records. Lower priority records are in fact higher priority for mail delivery. Mail flow is also somewhat based on the ability to perform DNS checks successfully, and to get the most up to date records.

You have two MX records:

office.nyif.org on Priority 5
mx2.mailhop.org on Priority 10

When people send emails to the domain, RFC standards dictate MTA's will try the lowest priority first, and if that doesn't work, fall back to lower priority MX records. I will assume that office.nyif.org is your SBS server, or some gateway element that checks for spam before delivering the emails.

What is the second MX for?

mx2.mailhop.org [216.146.33.7]

Where does that go? if it's a different mail system you could have some mail flow going to two different places.
 
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