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Originally Posted by timo_w2s
I run my own Mercury SMTP server from which I send all my outgoing mail from. But since it's on a dynamic NTL IP range some mail gets bounced back as spam. Is there a way to stop this?
I have a proper .co.uk domain at no-ip.com with MX records set to my SMTP server.
I like running my own SMTP server as I was having problems with NTL's main one and it means I can send mail from any ISP while I'm out and about on my laptop via my home connection.
Everything works great except the odd bounces to AOL users mainly.
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Your problem is that your IP address is dynamic, and therefore if the SMTP server you use does not match the MX record of the official SMTP servers for the IP range, many networks will choose to block email from your IP address.
Simple solution is to change the SMTP server name to smtp.ntlworld.com, that will mean that you then don't get blocked for running a mail server on a dynamic IP range.
An explanation can be found here.
http://www.dnsbl.nl.sorbs.net/faq/dul.shtml
Hope that helps.