Hi all,
Is there anyone who knows what cause this error? I'm struggling to find the reason.
hoping for better answer
Thanks Guys ,
Hi @Arl Gyan Ablanzar ,
This article may be helpful: https://www.enginemailer.com/blog/email-error-550-what-is-it-and-how-to-fix-it
This error message means the recipient's mail server is unable to find the mail account. This can happen due to email address typos.
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