Was doing a bit of scripting for a customer (now there's a novelty). The
script was sending an email to a Hotmail account, but the mail wasn't
getting through.
The subject line contained "example.com". Changing it to "example" cured
the problem.
I don't have a Hotmail account so I don't know if it's default to reject
domains in subject lines.
Just a little something to be mindful of.
I should say, I didn't test this. This was all feedback from the customer.
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Charles Sweeney
http://CharlesSweeney.com