Help please smtp, php FOR ISP

server mail.* not working please help (smtp, php)

We have a mail server, does not connect to the mail server when we use mail.rrr***.ru

Help me please.

mail server on our server. ISP manager

Welcome to the Cloudflare Community. :logodrop:

Have you read the following Community #tutorial? It is the best place to start when you are working through email challenges.

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