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thanhtien19
Iron Contributor
Dec 05, 2023

From Exchange edge sent email to Yahoo some problem

Sending email to Yahoo sometimes gives the following error . Anyone who has encountered this please guide me on how to fix it . Thanks

Last Error: 421 4.7.0 [TSS04] Messages from temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes

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