ACS - Hard Bounce due to User Unknown

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sandram57203835

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sandram57203835

sandram57203835

05-05-2019

Hi all,

Can anyone explain hard bounces where the error reason is 'User unknown' and how to successfully email these individuals? We have verified that this is a legitimate and real mailbox.

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I have also created a custom typology to ignore Quarantines to email this address, but it still bounces.

Thanks

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sandram57203835

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sandram57203835

sandram57203835

08-05-2019

Thanks Craig.

I raised a ticket with Neolane and they whitelisted the address on their end.