When it comes to connecting a mail server from aaPanel to Outlook, it usually comes down to a couple of basic things: ensuring your DNS records (such as MX, SPF, and DKIM) are set correctly and then double-checking the SMTP/IMAP settings that Outlook requires. Outlook itself doesn’t really care about aaPanel; it just needs the right server address, port, and authentication details.
I’d suggest starting by testing your mail server with a simple client (like Thunderbird or even webmail) before moving on to Outlook. If it works there, then it’s mostly just about plugging the right credentials into Outlook. Logs from your aaPanel mail service can also be really helpful if something doesn’t connect.