[Cialug] PTR records & SPF?

[Zachary Kotlarek]

On Oct 12, 2010, at 2:39 PM, Dave Weis wrote:

> No, a given IP can only have one name returned for reverse DNS. Just make sure the HELO matches the reverse and you should be fine. We have hundreds of domains where the MX doesn't match the hostname but there is a matching set of forward and reverse.



I assumed by "share the same PTR record" he meant "multiple IPs that resolve to the same hostname", but yes, if you mean "one IP returns multiple hostnames" you should stop that.

	Zach

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