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Treat E-mail Address As Valid If All Mail Hosts Timeout
If all the mail hosts timeout, should the e-mail address be treated as valid?

NOTE: Changing this to no will reject valid users when your hosting provider doesn't allow fsockopen calls or when the timeout value is too short. The SMTP RFC's allow for a connection request response wait time of up to minues, since this test is real-time with a waiting user, waiting minutes is impractical. Just because a host timesout doesn't mean the host is not there.