ZF-4901: MX-Check makes not too much sence - Mailserver may accept Mails without MX-Records


Nice Feature, but according to RFC 2821 Chapter 5, a mailserver which is correctly configured must not have a MX-RR. Checking such a Server with Zend_Validate_EmailAddress::setValidateMx() may result in a negativ Result, but the Server may receive e-mails. Due too this reason the MX-Check does not really make sence.

"If no MX records are found, but an A RR is found, the A RR is treated as if it was associated with an implicit MX RR, with a preference of 0, pointing to that host." (see


I think this is actually an improvement to the code, not the docs.

I just added a complete rework of Zend_Validate_EmailAddress... this feature has also been added to incubator for tests.See SVN r17945 for details.

Implemented with r18050 for ZF 1.10

This issue is not resolved in 1.10 or trunk, a domain with a RR record and not an MX record will still fail. It looks as though it was not implemented.