Why not receive messages from the site in the mail?

Question

PHP

Hello! I made this video https://www.youtube.com/watch?v=0bexJuzHFRo so that messages would come to gmail, but nothing comes at all. The script is triggered, it says that the message has been received, but nothing comes ... What to check? I read that some port 25 is blocking something ... but it seems to me that this is nonsense ... Maybe what needs to be configured on the server? I have an isp manager there. Help, I'm already tired.

Answer 1

There can be many reasons, I recommend using PHPMailer - it works 100%. You need to specify the correct settings for GMAIL, the settings are here https://support.google.com/a/answer/176600?hl=en
Sometimes it really happens that the hoster sets up a firewall and forbids sending mail))