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Comcast Business Support Community
SwampFox75
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May 11th, 2015
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9 years ago
Troubleshooting an email problem, I found this in our logs (after some cleaning):550-5.7.1 [2601:647:4900:8d00:d830:edff:feb2:8d1f] Our system has detected that 550-5.7.1 this message does not meet IPv6 sending guidelines regarding PTR 550-5.7.1 records and authentication. Please review 550-5.7.1 h
9 years ago
SwampFox75
joined community.May 11, 2015
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