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Hello. I have Exchange 2019 on-premise.
I tried to connect ThunderBird mail client via IMAP protocol.
I don't understand what protocols and encryption methods are needed.
Can you explain in detail about ports and encryption methods ?
Should I use only 25 and STARTTLS as modern technologies ? I have heard that ports 465\587 are considered obsolete.
I can't relate, ports, encryption methods and how the connectors in Exchange depend on it.
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Hi, you can follow this:
Use port 993 for IMAPs for the client to retrieve mail
port 587 to send mail:
Hi. Why 993 ? TLS more prefer, then ssl. And i can't connect to 587 port. Can only 25. But telnet listen 587.
993 is the encrypted port for IMAP client access to retrieve mail.
If you can only port 25 to send mail, then thats ok as well.