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Long-time Mac user, curious why, from time to time, Mail settings just plain disappear.

I only discover this when Mail suddenly can't connect. Have to input passwords again.

And not the same password or place (several email accounts.) Could be the server p/w missing, or the POP3. One of life's little mysteries, has persisted since at least Lion.

The keychain entries are fine, the keychain and in fact whole system well-maintained. So where do they go? What erases them and why?

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It will do that once per year ! – Buscar웃 Jun 15 '13 at 23:17
Oops, should I confess to duping my own question? – Zo219 Jun 23 '13 at 2:50

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