GMAIL intermittently responding with "user unknown" bounces instead of accepting legitimate email
Last updated 2022-04-21 ·Reference W-8584904 ·Reported By 31 users
Fixed
Summary
Currently GMAIL is responding with bounces in some scenarios when messages should actually be delivered as the subscribers are legitimate. The bounce messages would look like this:
Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does not exist. Please try
550-5.1.1 double-checking the recipient's email address for typos or
550-5.1.1 unnecessary spaces. Learn more at
550 5.1.1 https://support.google.com/mail/?p=NoSuchUser
Repro
1. Send to Gmail to known good subscriber
2. See/receive bounces from known good subscribers with engagement
Workaround
Currently we are recommending that clients do not send to Gmail subscribers in order to avoid these illegitimate bounces in the short term. In the long term, subscribers that were sent to can be re-activated once Gmail remediates this problem.
Gmail has reported this as an issue and is providing updates as they go.
A knowledge article that details how to re-activate subscribers that were affected by this can be found here:
https://help.salesforce.com/articleView?id=000322262&type=1&mode=1
Reported By (31)
Philippe Preisig
Thomas Heumesser
Nijo John
Jeremy Smith
Dearbhla Ryan
Ashwini Rajasekar
Ravi Yelamanchili
Ravi Yelamanchili
Neil Shah
Victoria Lasprilla
Nathália Pedral
Fernando Chen
Brian Solem
Rebecca Schults Robrahn
Ashleigh Rojanavongse
☁ Scott W ChristleyAny unreleased services, features, statuses, or dates referenced in this or other public statements are not currently available and may not be delivered on time or at all. Customers who purchase our services should make their purchase decisions based upon features that are currently available.
