I can't even begin to speculate on the reason for '777'. It looks to me like whoever wrote it was either dealing with very particular request input caused by something beyond his control or he/she was trying to specify a delimiter that had a reasonably good chance of being unqiue.
As for the 'delay' in sending your email, I'd almost guarantee you it has absolutely nothing to do with permissions. Permissions tend to be a 'yes or no' type of situation, not a 'sooner or later' situation. Email delays can be caused by anything. Remember, email sometimes has to travel through many intermediate computers before arriving at its destination. There are also delivery queues and spam filters and all other sorts of crap that have to chew on the mail before it finally gets where it's going.
If it's getting through at all, you should count yourself lucky.