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2545 Views 3 Replies Latest reply: Dec 16, 2011 12:24 AM by ajclements RSS
johnnyquad Newcomer 2 posts since
Dec 14, 2011
Currently Being Moderated

Dec 14, 2011 11:27 AM

#< #5.0.0 smtp; 510 Did not receive the expected protocol response.> #SMTP#

Can anyone tell me what this actually means: #< #5.0.0 smtp; 510 Did not receive the expected protocol response.> #SMTP#

 

I keep seeing this attached to "Delivery has failed to recipients of distribution list:" message that hits my administrator mailbox. The message is being generated by one of my Ironmail server.

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