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![1.7.6.1] Failed to authenticate on SMTP server with username using 2 possible authenticators · Issue #15763 · PrestaShop/PrestaShop · GitHub](https://user-images.githubusercontent.com/4420157/65905922-1aa42080-e3f4-11e9-9c94-76bf02a972d5.png "1.7.6.1] Failed to authenticate on SMTP server with username using 2 possible authenticators · Issue #15763 · PrestaShop/PrestaShop · GitHub")
1.7.6.1] Failed to authenticate on SMTP server with username using 2 possible authenticators · Issue #15763 · PrestaShop/PrestaShop · GitHub
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![Getting Error CNC-SDS-0335 Error returned from SMTP server. The error message was: [535 5.7.8 Error: authentication failed from <IP>]. The message could not be sent.](https://www.ibm.com/support/pages/system/files/support/swg/cogtech.nsf/0/012e928b717190a08525805a00428960/Symptom/0.240.jpg "Getting Error CNC-SDS-0335 Error returned from SMTP server. The error message was: [535 5.7.8 Error: authentication failed from <IP>]. The message could not be sent.")
Getting Error CNC-SDS-0335 Error returned from SMTP server. The error message was: [535 5.7.8 Error: authentication failed from <IP>]. The message could not be sent.
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Username and Password not accepted. SMTP could not authenticate. · Issue #1708 · PHPMailer/PHPMailer · GitHub
