Oh dear! Good spot – thank you so much. ZZ was a hasty addition in the migration and I hadn't realised it had a default score of 4. I shouldn't rush these things. Shame I can't find any solution to the Outlook for Mac issue. Was hoping it'd be something as obvious as the ZZ thing that I'd just overl...

Here is the diagnostic log in case that's helpful: 2019-01-30 Hmailserver: 5.6.7-B2425 DOMAINS "Domain1.com" - abxxxxxxxxxxxxxxxx.co.uk Enabled: True SIGNATURE LIMITS DKIM ADVANCED Enabled: False Max size: 0 Enabled: False Max message size: 0 Plus addressing: False Max size of accounts: 0 Greylistin...

Hi all. Been running hMailServer on different servers for years and it's an excellent MTA. However, one thing has followed me from setup to setup, regardless of Windows OS version, network, firewalls, etc – Outlook for Mac clients cannot connect. After the details are entered for the account, it jus...