IMAP Os x Quota's

[Tristan Firman]

Hi there
I have set up an Imap account using my Mac Mail (Version 3.6 (935/935.3)). It all works great, and so forth except that somewhere along the lines my mail is being deleted off the server.
It's important to note that this is NOT deleted mail - which should be, and is being, deleted - but mail i wish to keep.
I cannot deciphere exactly how it decides what to delete, but I seem to have quota's enforced - but when I try to set quota's (under -> account info -> quota's ) I cannot set anything. It tells me that "this account supports quota limits", but it won't let me adjust them?

As best I can tell it's deleting mail older than 1 month or 200 messages or a size (indeterminable).
I synch with my iPhone mail app, also using the Imap, and it has an option to "display" xxx messages. Currently this is set to 200 (the max option), I cannot deselect it and cannot select more than 200. I figure, however, that this refers to how many messages are displayed on my phone, not the limit stored on the server.

Thanks
Tristan

 

[earthsaver]

What company hosts your email? Those quota specs sound like defaults on our DreamHost accounts. Is there an admin site for your host where you can change the settings? You probably wouldn't be able to change them in Mail or even in a webmail site.