Document Migration From Mailcow, And Detailed Information Of The Services, Where Stuff Is Stored

[Smitty Werbenmanjensen]

I am suggesting two things:

Migration

The first being improving upon the migration page by adding a section that goes over the basics of what one would do in the case they want to migrate off of mailcow, while keeping as much data as possible.
I understand this process would vary greatly depending on what service the user is migrating to, and it would not make sense to document for each service, I am simply suggesting providing an overall guideline, and resources the user can use to aid them in this process.

Service Documentation

There are already a few pages, however not all have an explanation page. For example Redis has it's own page, but from what I can tell Postfix does not. Postfix does have other information thoigh.

What I am suggesting is providing a new page, that outlines all of the services mailcow uses, in reasonable detail, how they work, what they are used for, etc. And then each of these can link to further reading pages which would link to the already existing guides.
Having one page would make it easier for newer users to identify each service quickly with ease, what they do, and more without having to click on each one to see what they do (like how the Redis page currently is).

File Locations

In relation to the above, I think it would be nice to provide detailed documentation on all the paths where the major/important Mailcow (services) files are stored.

The goal of all this is to provide users with a better understanding of how stuff is working and how to manage mailcow better. I also think it's simply just important to document how things work.