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I have a dedicated server at OVH.

For several days I've noticed I'm in a spam list (spamcannibal).

The reason I said was for generic PTR. I've changed and I have commanded to remove from the list.

I've been reading about the steps to configure the dns well but I did not clarify.

I have 3 domains hosted on my server and send emails 3.

if I type host [my ip] servidor.mydomain.com me back and if I type host [servidor.mydomain.com] return my ip

Is this correct? mydomain.com is one of the three that I have hosted

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Have you set SPF records for those domains? –  pduersteler Jan 4 '13 at 11:07
    
I can look where the spf records? I'm a web developer and now I have to take a server and some big things come. I'm using ispCP Omega as administration panel running on debian –  Fraskito Jan 4 '13 at 11:48
    
I've looked and I think what you mean is something like it? This record, if I have it in all domains mydomain.com. IN TXT "v=spf1 a mx ip4:myip ip4:myip ~all" –  Fraskito Jan 4 '13 at 12:18
    
yup, that's what I meant. –  pduersteler Jan 4 '13 at 13:33

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