Phpmailer e-Mail local success, failed on server

Local success, uploaded to the server above send failed, prompt the following information. Is it related to server configuration? Or that the server is not connected to the mail server? I'm using a smtp.sina.com.

Reply content:

Local success, uploaded to the server above send failed, prompt the following information. Is it related to server configuration? Or that the server is not connected to the mail server? I'm using a smtp.sina.com.

This is not connected to the mailbox server Ah! Check the address, port, server network and other issues, confirm whether to dial VPN, etc. I met once because the IP was not set to whitelist or sent out.

You change the debug to True, and then you can see the specific hint of the error directly.

You try the 163 mail server first.

