Tom_Hickerson
asked on
Email Server Blocks at various websites
Hello,
Apparently somone on my network has a email worm virus, and has got me on some ban lists. I am trying to find the infected computer, but have not been able to yet, but I blocked access to port 25 from everyone in my network except the mail server.
I recieved this error when I tried to send out an email to a hotmail user.
550 Command rejected for policy reasons. For troubleshooting information, go to http://postmaster.msn.com
How do I fix the issue to send out to hotmail users again?
Apparently somone on my network has a email worm virus, and has got me on some ban lists. I am trying to find the infected computer, but have not been able to yet, but I blocked access to port 25 from everyone in my network except the mail server.
I recieved this error when I tried to send out an email to a hotmail user.
550 Command rejected for policy reasons. For troubleshooting information, go to http://postmaster.msn.com
How do I fix the issue to send out to hotmail users again?
SOLUTION
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Hotmail now have new policies on accepting mail from mail servers.
They will not accept mail from a mail server that does not have a SPA record in their DNS.
Check that your DNS for your domain contains a TXT entry with SPA information.
They will not accept mail from a mail server that does not have a SPA record in their DNS.
Check that your DNS for your domain contains a TXT entry with SPA information.
ASKER
what is spa and do I do that with my registar?
sorry ... my typo .... I meant SPF.
This is a DNS entry for your domain name.
If your mail server was mail.yourdomain.com
then a typical entry would be
mail TXT v=spf1 mx ptr ?all
This is a DNS entry for your domain name.
If your mail server was mail.yourdomain.com
then a typical entry would be
mail TXT v=spf1 mx ptr ?all
ASKER
where do I add/edit this info at?
ASKER CERTIFIED SOLUTION
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http://www.amset.info/exchange/spam-cleanup.asp