I apologize about the case - it was my *administration* fault and would not happen again.There is no need to black list - it just would not happen. Sorry.
This is the second time in the past few days that lechlecha.jct.ac.il has injected a bunch of old messages into pgsql-admin. Can you arrange to blacklist that machine so it doesn't happen again?
One example attached, but there were about two dozen this morning.