Since i switched to mailcow im having problems receiving mails.
For example, if i sent a mail to me with my gmail oder yahoo account it works flawlessly within seconds.
But on most companys or services it takes up to 5-10 minutes for the mail to show up in my mailbox. (the time in thunderbird is like 10minutes in the past even though it just popped up in sogo and thunderbird).
At some services i dont even get the mail at all. In most cases the logs are empty until it gets delivered 10 minutes after it shouldve. Rspamd also cant be the problem because i configured it to let any mail with any score through to my mailbox and there are no blocked mails in the rspamd history.
Also some commercial services like this mailcow forum deliver the mail instantly again.
Does anyone have an idea what the problem could be?