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New install uses email@example.com,
but mail system for domain example.com is elsewhere, but mail system for
subdomain.example2.com mailboxes is with the same hosting provider.
I have typed in correct IMAP 993 and SMTP 587 details and set it on SSL according to email configuration guide and this by the way works on the old install. I press Save Settings and it saves them with Success. Before (at 1and1) I could not make this work, always stuck on SMTP part not able to authenticate, so had to disable it, have IMAP enabled only.
I send a diagnostic email and it also says "with success" but I do not receive anything on the other end. In the settings it is set to use this as default and fetching is enabled (not on auto using cron, but default that also works for me on another install)
This mailbox has been tested both ways and I can send to and receive from emails. Default MTA is set to use firstname.lastname@example.org not PHP mailer.
I have moved this system from 1and1, copied over files and exported/imported DB, changed DB connection details and it works. Is there anything I have overlooked or should I reinstall from scratch?