Need Help Understanding Exchange 2013 Retention Policies

We're attempting to implement Exchange 2013 email retention policies at our firm and I'm having trouble understanding how the process works, hopefully someone can help me...

We've set up our tags this way for the default policy:

Default Tag: After 730 Days Move to Archive
Default Tag: After 2555 Days Permanently Delete
Deleted Folder and Junkmail: After 365 Days Permanently Delete
A few other personal tags

Basically we want everything in the inbox that doesn't have a personal tag to be moved to the Archive after two years. Once in the archive we want it to stay in the archive for another 5 years, after which it is permanently deleted. Have I set up the tags correctly in order to accomplish this?

Also, I've noticed that in some of our mailboxes the deleted items folder has emails in it that are older than one year. I'm not sure why since our policy on Deleted items is to delete everything older than one year. Do the policies calculate retention based on the time when an item was received or moved or some other factor?

Any insights would be much appreciated!
Scott FowlerAsked:
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Scott FowlerAuthor Commented:
Thank you for the articles! They provided some nice points that I wasn't aware of.

However, it sounds like retention policies cannot be applied to the archive folder. Is that correct?

Also, I'm still a bit unclear as to what is used to calculate the retention length? For instance: if I have an item in my deleted folder with an RPT of permanently delete after 365 days, will it delete the item 365 days after it was received or 365 days after I moved it to the deleted items folder?
Scott FowlerAuthor Commented:
Even though my initial questions were never fully answered, I was able to use the links to point me in the right direction. Thanks!
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