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I change my external DNS host and email is not coming through.

Posted on 2008-10-31
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Last Modified: 2009-02-26
this company called XNET was in control of DNS for my companies email.  i talked to them on the phone and they told me that they were basically redirecting all my mail to my exchange box in house.  however, we did not have any billable services from them anymore, so they were not charging us anything.  they asked me if i could move my DNS over to Network Solutions, who we purchased our domain name from.

Yesterday afternoon, I took our DNS from XNET and moved it to NETWORK SOLUTIONS.  As of late yesterday afternoon, no email has been coming through to my exchange box.

According to network solutions, my mail record is configured properly.

Here is what I get when I try to send from my gmail account

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 Requested action not taken: mailbox unavailable (state 14).

If anyone can shed some light, I would appreciate it.  I am on hold right now with tech support to see if they can tell me anything.
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Question by:tomdlgns
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by:tomdlgns
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hmmmm, what happened to everyones replies?
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by:flyguybob
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You posted at 0929 and then posted a follow-up about 42 minutes later.   It's likely that people had a busy Friday since it is end of month and they had to get their time, projects, customer billing, data, etc. input and finished before end of day.  That would be my guess why there are presently no replies.

Just to provide some additional info, the time, projects, billing and data I refer to are between the Expert Community Member and their employer or customers and not between Experts Exchange and the Expert or EE and the EE customer.  

The folks that answer the questions here do so on a volunteer basis.  Seriously, we do not get paid a thin red dime to sit and answer the questions or follow-up.  We do get the benefit of a membership to the site dependent upon how many answers are accepted and rated and at 1,000,000 points we may get a Genius t-shirt.  That's about it.  We can't convert people on the EE board into a customer, request, or even accept payment.  ...hope that helps clear it up.

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Expert Comment

by:flyguybob
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The first thing I recommend is checking your DNS records manually.  You can do this from home or from DNSStuff or MX Toolbox (http://www.mxtoolbox.com/).  Check to see what MX records are listed and verify that the IP address is correct and that the correct nameserver is responding.
Some ISPs block this or force you to their ISP.
Telnet yourserver.yourcompany.com (this is the A record for the MX record) 25
Ex
Telnet mail.yourcompany.com 25
Make sure this is going to one of your servers and not someone else's, such as the bridgehead/smarthost or AV and anti-spam scanner at your old ISP.  Just because the ISP says it is working does not mean that it is going to the correct mail server and the correct external IP.
Attempt to send a test message to your mailbox.
This is a good overview of how to send a test message:
http://www.auditmypc.com/freescan/readingroom/relay.asp
You can also run the diagnostics from MX toolbox to check the connectivity.
In addition Sembee, an E-E Expert, has a good website that may provide additional guidance:
http://www.amset.info/exchange/dnsconfig.asp

If you have questions please feel free to post.
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by:flyguybob
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I also wanted to note that Sembee's site also has a bunch of great Exchange articles outside of the DNS issue we are working on.
http://www.amset.info/exchange
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Expert Comment

by:gupnit
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Hi,
See this happens when you change your DNS Records for the domain frequently.
Please goto www.mxtoolbox.com and verify that your RDNS is properly configured. This is due to multiple changes to RDNS, that makes you look like a spammer.
Also try to send urself mail from other systems like rediff/yahoo not from gmail/hotmail and see if they are delivered. Also DNS updates take anywhere between 24-48 hrs to happen.
So by now ur issue should have been resolved
Cheers
Nitin
FlyGuyBob - I agree with you on your first comment, but I think we were too harsh on our dear friend, as he had followed up only after around 12 hrs. Also, we got to see his state of mind, as he was in trouble :-) !
Cheers
Nitin
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Author Comment

by:tomdlgns
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no, i didnt mean that i was expecting replies...what i am saying is that...they was a thread and there were replies in it.  i had 15 or so replies....i am asking why they got deleted.

i understand this is all on a volunteer basis.  i think you misunderstood what replies i was referring to.



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Author Comment

by:tomdlgns
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mxtoolbox.com shows my domain point to this name server

ns94.worldnic.com reports the following MX records:

that IS the corr/new name server.

so, when i enable the symantec mail security for exchange service, it thinks everyones email is spam and generates a bounce back to the sender.  if i disable the symantec mail security for exchange service, email flows through with no problems.


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Author Comment

by:tomdlgns
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correct/new *
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Author Comment

by:tomdlgns
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when i telnet i see this in the cmd prompt screen

220 SMTP service ready
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Expert Comment

by:gupnit
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Hi,
Hmm....Symantec, can you show me screenshots of your configuration in Symantec
Cheers
Nitin
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Author Comment

by:tomdlgns
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Yes but what exactly do you want a ss of?  There are lots of options to choose from.
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Expert Comment

by:gupnit
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Inbound Mail Settings.
Also the server that receives actual mail (MX above) is that the same one where you have your Symantec Mail Secuity installed ?
Thanks
Nitin
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Author Comment

by:tomdlgns
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Yes same server.
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Author Comment

by:tomdlgns
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here is the screen shot of the inbound

http://img162.imageshack.us/my.php?image=inouttp7.jpg

there was nothing in there.  
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Expert Comment

by:flyguybob
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That is not good that replies got deleted.  Sorry for my misunderstanding.
I assume you added the domains you handle in your appliance/AV appl?
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Accepted Solution

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tomdlgns earned 0 total points
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i forgot to update this post...

i ended up getting disabling symantec for mail scans and i went with a new, 3rd party solution.

i setup an account at messagelabs.com and everything is working good for now.  thanks guys.
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