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killinghall

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I can send and receive within the LAN, but if I send mail to my domain from Gmail or Hotmail, nothing shows up.

I've used MailEnable prior to KMS and had the same problem.

My DNS records are configured correctly, MX pointing to the domain.

DNSStuff shows that I do not have PTR/Reverse DNS records.

I suppose this is the problem?
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winkelman

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killinghall wrote on Wed, 14 February 2007 16:22


DNSStuff shows that I do not have PTR/Reverse DNS records.

Without PTR record you would certainly not be able to receive mail from a lot of mail servers, possibly including Gmail and Hotmail. So you need to fix that regardless :)

Are you sure your MX records are setup correctly? Is there any mailserver that has succesfully send you email?
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killinghall

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No, so far tried 2 mail servers, none are delivering.
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dbarak

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What ports do you have open on your router? How are you pointing your MX records?
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killinghall

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The following ports are open

DNS - 53 (doubt it's needed)
SMTP - 26
POP - 110

MX records are pointing as such

domain.com MX 10 mail.domain.com
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dbarak

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have you tested smtp on port 25 or is your isp blocking?
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killinghall

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I believe my ISP blocks that port, but mail would still go in via 26 wouldn't it?
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jpokinpo

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MX (mail exchange) record automatically routes e-mail traffic to port 25. So, incoming mail will automatically seek port 25, which is not open on your router or is allegedly blocked by your ISP - hence, the rejection.

Within your LAN, mail is routed behind the router to the server and chances are that you have configured the clients for SMTP 26.

If this is a business type account, call up the ISP for a solution or get another.
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winkelman

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killinghall wrote on Fri, 16 February 2007 03:09

I believe my ISP blocks that port, but mail would still go in via 26 wouldn't it?

There's no way to tell all the mail servers in the world to send you mail on any other but the standard SMTP port. If you cannot receive connections on port 25, you cannot receive email from other mail server.
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