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ISP (Web Host) doesn't support TXT records

Hey guys,

So I just recently setup Exchange 2010 on my internal company server (running Server 2008), and everything seems to be working OK so far, except certain email addresses are giving us this error when we send out emails to them:

escanner2.cmc.ec.gc.ca rejected your message to the following e-mail addresses:
 
Name,Name [Ontario] (Name.Name@ec.gc.ca)
 
escanner2.cmc.ec.gc.ca gave this error:
XX.XX.XX.XX: on real-time blacklist stj9d4lx6jgzlaudhr3k7ku29v2vecg.r.mail-abuse.com 
 
Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery.

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And another one said..

smtp1.telebecinternet.com rejected your message to the following e-mail addresses:
 
Name Name (name.name@cablevision.qc.ca) (name.name@cablevision.qc.ca)
 
smtp1.telebecinternet.com gave this error:
No reverse DNS found

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After doing some research I realized that it was because I don't have SPF records setup.. so I contact my ISP (who is also my web host), and they said they don't support it..

What do I do now? Find a new web host to manage my DNS? Any you guys can recommend?

Thanks.

ASKER CERTIFIED SOLUTION

Adam Brown

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barbs1

ASKER

I have no issues on doing that and know how to proceed with this. Thanks for your help!

BWaring

Although I agree with acbrown2010, and you should have SPF/TXT records established for your domains/hosts, the second error is related to reverse DNS, not SPF/TXT records. And the first error may be the same; it doesn't say why you are blacklisted (may be a dynamic IP block), so those issues need to be resolved as well, regardless of where you host your DNS.....

Adam Brown

BWaring, SPF utilizes a reverse DNS lookup to ensure that an email came from the server it purports to be from. If an NDR mentions that no reverse lookup could be done, it's because they are requiring an SPF lookup to receive mail and there is no SPF set up on the sending server.

barbs1

ASKER

Are you able to describe how to setup a reverse DNS then?

SOLUTION

BWaring

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barbs1

ASKER

Would GoDaddy.com provide reverse DNS too? My ISP is now also telling me that they don't support reverse DNS..

And by FQDN, do you mean the name of the A name record I created (exchange.domain.com) that points to my external static IP?

Adam Brown

I just checked my Godaddy account to see what they support. They actually have the SPF records set up by default on the domain that I have, but that may be due to the fact that I bought it through them. From what I can tell, they also support Reverse DNS.

As a side note, I'd highly recommend looking for a new ISP if you can. Sounds like they don't really know what they're doing...

Adam Brown

Also, FQDN is the full name of a server on the internet or network. exchange.company.com is an FQDN for the exchange server on the company.com Domain Name.

barbs1

ASKER

Funny, this is Bell Canada (major company in Canada), the other major ISP is probably the same way. I think its best just to switch hosts. Thanks for all the help.

BWaring

Godaddy does definitely support all of this... Agree on switching!