Knowledge Drop

Custom SMTP: Failed to send mail: 501 Sender syntax error


Userlevel 3

Last tested: Nov 30, 2020

 

When we see this error message on SMTP setting page, more likely to be due to incorrectly defined the "from" setting. User should insert an email address for "from" setting. 

Screen Shot 2020-11-30 at 22.53.39.png

 

ref:

 

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