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My server ip is and none of the blacklists I could find blacklist my domain. Nevertheless, many of my customers recieve their emails in their SPAM folder. I just created a account and my registration confirmation email went to SPAM.

My email is just a regular Magento confirm your account email.

Any ideas why this happening?

you can see my mail source here:

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Do you have an SPF (Sender Policy Framework) record for your domain(s)? – Matt Feb 22 '13 at 10:18
seems like I don't. Will add. Thanks – srgb Feb 22 '13 at 10:23
up vote 1 down vote accepted

There are many things that you have to do which are often being checked by receivers:

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As an offhand guess, the fact that your MX server is misconfigured, CentOS-63-64-minimal.localdomain is not a proper FQDN, and for sure has no RDNS entry or proper MX record?

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my domain has a zohomail MX record, whereas server uses sendmail to send mail - could that be a problem? - RDNS points to , which is stack where my server is hosted, but is not my domain – srgb Feb 22 '13 at 10:20
Those are problems, the mail should show the mail coming from your FQDN, the one configured as your MX server, and if possible, the RDNS should match. That alone is enough to ensure your email will finish in many spam folders. – NickW Feb 22 '13 at 10:24

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