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Question about Bounce Reason 554

Question asked by d616ab8d44dd6cf5de948396b223ba89a4ac1e5e on Jan 25, 2017
Latest reply on Jan 26, 2017 by d616ab8d44dd6cf5de948396b223ba89a4ac1e5e

We had a lead fill out a form, which triggered an automatic follow-up email. However, the follow-up email bounced, and this is the note that was in the lead's Marketo activity:


554- 554 Unfortunately your access to this mail system has been rejected due to the sending MTA's poor reputation and e-mail hygiene on the Internet. Please reference the following URL for more information:



Anyone have more information on this?