| 421 - Blocked (address). See http://www.prolinux.net.uy/ir/a/blocked/ |
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| Why my address has been blocked? |
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You must be here now because your IP address has been blocked by a ProLinux E-Mail Server 2.0. This blocking protects our customers by enabling a dynamic filter designed to identify real e-mail servers and prevents connections from known spamming systems, dynamic addresses and servers that don't follow some simple rules needed to be considered legitimate.
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The message you get when you try to send e-mail to one of our servers is:
421 - Blocked (your.reverse.dns.address). See http://www.prolinux.net.uy/ir/a/blocked/
or
421 - Blocked (NNN.NNN.NNN.NNN). See http://www.prolinux.net.uy/ir/a/blocked/
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| Possible reasons are: |
- You are trying to send e-mail from a server with a dynamic IP address.
- You are trying to send e-mail from a server with an IP address that have no reverse dns record.
- You are trying to send e-mail from a server with an IP address that have an inapropriate dns record (i.e.: starts with numbers, like a dynamic IP address).
- You are trying to send e-mail from a server with a reverse dns record from an ISP who is listed as "spammer friendly" in our list.
- You are trying to send e-mail directly from an ISP who is listed as "spammer friendly" in our list.
- You are trying to send spam, and our servers do not accept spam.
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| I'm not a spammer! What can I do to fix this issue?: |
- Make sure you are sending e-mail through a real e-mail server.
- If you are an end-user, ask your system administrator to check the problem.
- Ask your ISP to fix your reverse dns record so it will be correctly identified as a real e-mail server (I.E.: "adsl0012314-dynamic.provider.net" is not a valid reverse dns record for a real e-mail server, but "server.yourdomain.com" is a very good one.
- Contact us via this form and send us all the related information to help us help you. You can leave a formal compliant there too.
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| Remember: |
| Our spam policy is very strict. If you believe your situation is our mistake and wish to discuss this topic with us, please call +(5982)4112541, between 9.00 A.M. and 5:00 P.M. (GMT -03).
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| Contáctenos para obtener más información al respecto. |
