Hello,
I'm trying to ban @aol.com for signing up to wikimediacz-l. This is a
member-only list for Wikimedia Czech Republic members and as
aol.com is
pretty unfrequent in Czechia, I don't expect any problems (and if there
will be some, members of the list are added by a list administrator). There
is a big sign-up spam, so that's the reason why I decided to issue the
block.