Writing a reply to Phillip Potter's e-mail address, it bounced back.
I've already signaled the inconvenience to the recipient's AT&T mail server. They replied me to wait 24-48 hours to solve the problem.
In the meanwhile I want to advise Fabio Trevisan also. I wrote him an e-mail to, with no reply, some weeks ago.
I've noticed that gmail.com seems to mark my e-mail sent to it as spam and blocks it, putting my mail in the spam folder of the recipients.
Several of my friends found my emails in their spam folder. And all of them used gmail.
I don't know really why that happens. My e-mail address is active by 20 years.
I'm using the same (paid) server since then. Only in last three/four months I've noted that very irritating inconvenience.
Max