1. all mail sent to the list will be bounced back to the originator
during this period (most likely)
2. all mail sent to the list will go in the bit bucket (least likely)
The solutions are:
1. don't send any mail to the list on sunday :-)
2. if you get mail bounced, wait a few hours and try again
If you send mail to the list on Sunday, and you're not sure if it
turned up, drop me some email and I'll let you know.
Just so you know, the period in question will be between 7pm or so, and
probably 11pm local time (which is roughly UTC+10).
cheers
-steve