"SMTP Error: The following recipients failed

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Hi, I'm setting up an contact us form and WP using contact 7 plugin and I have trouble.

here are couple error messages:

["ErrorInfo"]=>
string(160) "SMTP Error: The following recipients failed: [email protected]: Verification failed for
No Such User Here"
Sender verify failed
"
SMTP -> get_lines(): $data is "550-Verification failed for
550-No Such User Here"
SERVER -> CLIENT: 550-Verification failed for
550-No Such User Here"
550 Sender verify failed
SMTP ERROR: RCPT TO command failed: 550-Verification failed for
550-No Such User Here"
550 Sender verify failed


Here is a file link to the full test result: https://www.dropbox.com/s/26ewqss99353dmp/TestMessage.txt?dl=0


Please help me :(

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Arn
Hello, Sorry for the problem with setting up a contact form using SMTP in WordPress. The reason that you're getting the 550 error is that you're using a GMAIL user ([email protected]), and your email is setup on the server to be served from the local server (based on your account notes). If the email settings are set to use a local server, then the users for outgoing email (SMTP) would need to be coming from the local server (not Gmail). If your server was set to NOT handle email and let a remote service (or server) such as Gmail handle the mail, then your settings would need to be configured with that purpose in mind. If your email service is set to remote, then it will use the users from that remote server and not from the local server. You are seeing the error because the outgoing mail coming from the form is using SMTP. It is set to use the local hosting server at InMotion. However, since the form is looking for a GMAIL user, the error pops saying "No such user here". So how can you resolve this? If you intend to use the local email server, then you can easily setup an email address and then use that on the form. If you need to automatically send to the GMAIL address then you can use an email forwarder. This will automatically send a copy from an email address on the server and forward it to another destination. I hope this helps to answer your question, please let us know if you require any further assistance. Regards, Arnel C.