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Deliverability: Valid Addresses Marked as Invalid (Doc ID 2278214.1)

Last updated on DECEMBER 23, 2022

Applies to:

Oracle Eloqua Marketing Cloud Service - Version 9 to 10 [Release 9 to 10]
Information in this document applies to any platform.


There are many reasons a valid domain could come back flagged as 'invalid' by the mailing platform. Ultimately these are complex setups and heavily reliant upon the bounce messaging received back from the ISP directly. The mailing platform is dependent on this ISP data, and uses this information to determine how to interpret the delivery of a particular address. This article will shed light on why valid domains could be flagged as invalid in mailing situations.


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