Mac hangs and takes 1 hour to restart.

i have a mac book pro which i bought in 2010 and has a core 2 duo processor. after i installed lion on it, my mac keeps on hanging. i have to shut it down then, and then to  restart, it takes at least 40 minutes. yesterday, it took 1 hour to restart. my software is up to date and i don't run any heavy applications. please help.

Hi
If you up the logging level to Information or Debug you should see something like this in the Mail.log: "NOQUEUE: reject: RCPT from . . . . 450 . . . . Recipient address rejected: Service is unavailable:"
Greylisting is enabled by default as soon as you start the Mail Service. Any legitimate mail server will try and send again to your domain. Spammers will give up and move onto an easier target.
HTH?
Tony

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