Quite to the end of Jaguar installation you have to set your email address, POP address, and SMTP servers. But the installer doesn't allow yout to set a protected (for instance, with a password) SMTP; it just allows to indicate SMTP name. And when you launch Mail and set the password, you then have TWO SMTP servers with the same name. The first one was created during Jaguar installation, and the second one when you've entered the password. To delete the first of them, you have to:
<key>DeliveryAccounts</key>As with most modifications, you should make a backup of the file before you start chaning things.]
Mac OS X Hints
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