So, more of an FYI to staff:
About 2/3 of the way through the bouncing all email snafu, and before an acknowledgement was made of the problem, I sent an email to Deputies to see if there was an official update.
Today I got back the following:
"The following message to <deputies [at] spamcop.net> was undeliverable.
The reason for the problem:
5.4.7 - Delivery expired (message too old) 'timeout'"
"Reporting-MTA: dns; prod-sc-smtp2.sv4.ironport.com
Final-Recipient: rfc822;deputies [at] spamcop.net
Action: failed
Status: 5.4.7
Diagnostic-Code: smtp; 5.4.7 - Delivery expired (message too old) 'timeout' (delivery attempts: 0)"