SMTP problem

I’m unable to connect from PHP to my SMTP server at

Connecting to other SMTP servers works without problem.

Is InfinityFree blocking access to If so, can the IP please be whitelisted.

I did check with the network manager responsible for The confirmed that they are not blocking InfinityFree.

We don’t block access to any specific SMTP servers, to my knowledge.

Please make sure you are using port 465 or 587 to connect. Some SMTP servers support connections over port 25, but that has been blocked on our servers for security reasons.

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