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Q: Web Hosting - Have we lost emails when changing to another host and changing MX? ( No Answer,   1 Comment )
Question  
Subject: Web Hosting - Have we lost emails when changing to another host and changing MX?
Category: Computers > Internet
Asked by: allwehereisradioga-ga
List Price: $15.50
Posted: 19 Jul 2005 12:26 PDT
Expires: 18 Aug 2005 12:26 PDT
Question ID: 545447
Hi,

We resell hosting as part of our service for a client, and we moved
them to a different host on Saturday. The new hosts are great but the
move has not been smooth. The client picks their email up using MX
Exchange Server, the MX records were pointing to the IP address, which
is how it was set up on our hosting before the move, and it was
causing no problems.

Initially with the new host it was set to POP not MX, and so all
Monday's emails are in POP3 accounts - which the clients can access
and forward using webmail.

Once the MX records were set in place, and all had propagated, with
the new host, this returned the following error message when people
emailed them.

"It appears that the DNS operator for yoursite.com has installed an
invalid MX record with an IP address instead of a domain name on the
right hand side."

Followed by the email in its entirity.

We change the MX record from the IP address to the Domain name, as its
a change to DNS records I expect this will take up to 24 hours to
propogate.

The web hosting company and I were talking - we think that these
emails that return the error message do actually still get through,
its just because the way the MX records were handled they are not
bouncing, they are sitting waiting for somewhere to go, and will be
directed accordingly once the DNS propagates.

But, my client has heard different from other IT experts.

Both the old hosting and the new were on UNIX, we moved from Plesk 7.5
to cPanel if that's relevant.

I am aware there are differences between Plesk and cPanel - for
instance when we had the MX records and were the site control panel
was Plesk 7.5, there was no webmail for the sites, now it's with
cPanel there is webmail, although obviously there is no webmail going
in into the mailbox since the MX records updated.

The thrux of the problem is probably the conflict in the below
statements. The first is from my previous hosts, and their advice
worked fine.

1) login in Plesk and go in the DNS section of that domain.
2) delete the record "mail.domain.com".
3) Add a new A record
4) make it "mail.domain.com" and point it to the client's IP
5) verify that the MX records points to mail.domain.com (which now
points to the new IP).
6) go in the mail section of the domain and click Disable

This is from the new host, and as you can see cPanel won't let the
changes go the same way.

"The problem could be my end, but only because I don?t know how there
system checks the email, I need to know this and what setting they
want exactly on there hosting package, I have done exactly what was on
the previous hosting account's setup except you have an A record setup
with the IP address and this does not make sense and WHM will not let
you add an entry like that, as it is invalid."

The new hosts advice is in line with the error messages our client is getting.

Can anyone advise what we should be doing - and if there are missing
emails, and how long it will take to rectify (eg 24 hours DNS
propogation, etc)

Thanks in advance,

Scott
Answer  
There is no answer at this time.

Comments  
Subject: Re: Web Hosting - Have we lost emails when changing to another host and changing MX?
From: romkri-ga on 19 Jul 2005 15:00 PDT
 
First of all, try nsslookup and connect to some therd party dns server:
---------------
nslookup
server ns1.valuehost.co.uk
set querytype=any
{youredomain.com}
---------------
Lets see, what data everyone in the world see
After that will do the same, but using you're first/last dns server
Compare those records.
Look at "expire  = 43200 (12 hours)" field.

This will helps You to know what time it takes...

Mail server collects mail that did'n rich recipients about 1-7 days
(depends on demon configuration, but each try starts to query dns
server again)

Sorry for my English.
Roman Kriman

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