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SMG: Internal to external mail send failed

Created: 09 Jun 2013 | 1 comment
cus000's picture

Hi All,


Any idea if this just a temporary error?


“#< #5.4.7 smtp; 554 5.4.7 [internal] exceeded max time without delivery> #SMTP#



We did MX lookup test on a external domain from the appliance, seems ok... managed to resolve it and do a telnet test




Operating Systems:

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cus000's picture



Could be this due to temporarily DNS lookup failure?