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Received >>> 550 mx records inaccessible for too long for domain:
- Thread starter edzy55
- Start date
Just to clarify -
You're sending mail to them, and it's bouncing back from their system?
If it's complaining about MX records, I'd verify that yours are correct (they likely are), and that reverse DNS entries are correct, and any published SPF records are correct. It looks to me like they are trying to do an MX record lookup for sender reputation.
Pat Richard
Microsoft Exchange MVP
You're sending mail to them, and it's bouncing back from their system?
If it's complaining about MX records, I'd verify that yours are correct (they likely are), and that reverse DNS entries are correct, and any published SPF records are correct. It looks to me like they are trying to do an MX record lookup for sender reputation.
Pat Richard
Microsoft Exchange MVP
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