while doing maintenance on the php.net machines this weekend, i turned off the filter i'd been using to block mails to the root address that had a subject of 'failure notice' (ie, all the double-bounces). i am staggered by the amount of spam that is pounding against the whitelist-protected mailing addresses, and bogus mail addresses (like birthdaycheck@php.net) that happened to be published as examples, once upon a time. i'm going to apply the aardvark and zygote trick to these latter addresses. (that is, immediately put the sender in qmail's badmailfrom file, which will prevent any mail from that sender to any php.net address.)
hai
what you have done is good. but if you put one id like
example@example.com in /var/qmail/controll/badmailfrom
you can prevent that mail to all users at a time.
it is not depended on user settings.