This Monday I moved offices from one location to another. I received a new IP block. I modified my MX records and ptr records but did them incorrectly. I had incoming mail going to my Barracuda Spam device and outgoing mail leaving through my exchange server. When mail started being rejected I panicked and started sending mail outbound through my barracuda as well. So now I have my mx record pointing to barracuda and my ptr record resolving to barracuda. I made that last change today. Mail is still bring rejected. How can I validate that my current DNS configuration is good?. Does this take time to resolve? And if so how long before they will start being delivered?
Please help... My email has been unstable for 3 days now and things are not good!!
For example google's mail server identifies itself as
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In your case, earlier it was coming up blank however now it shows this
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So your banner is now OK. As for the PTR's lets put that on hold because I don't think it is what is causing your problem here.
The original header you posted - It was for incoming email and its clear that it was rejected due to your IP being on the blacklist.
The second header you posted says:
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So the question is what is sasmail? Header says Barracuda forwarded the email to sasmail and your comment says the other way around.