i dont't really know, if this is a technical problem or even my fault:
I "installed" the dockerized version of mailcow on my server without any faults.
It ist working very well but when i want to create a new mailaccount in thunder there is no real autodetection.
In DNS i configured the following values:
autoconfig.domain.tld A-Type 220.127.116.11
autoconfig.domain.tld AAAA-Type 2XXX::
autodetect.domain.tld A-Type 18.104.22.168
autodetect.domain.tld AAAA-Type 2XXX::
mailcow.domain.tld A-Type 22.214.171.124
mailcow.domain.tld AAAA-Type 2XXX::
Thunderbird detects .domain.tld but ports and authentication is not detected.
When i change .domain.tld to mailcow.domain.tld everything is well detected.
Also the is a "problem" with ActiveSync:
It does not work on my iPhone 5SE with iOS 10.2 installed.
All neccesary data can be entered within the exchange-configuration but Mail cant connect to ActiveSync.
Who can help?