Last modified: 2012-05-15 14:21:18 UTC
The "Prevent user from sending e-mail" feature was recently added to the IP block interface on the English Wikipedia. This feature was installed as a result of perpetual mass e-mail spam abuse by multiple banned users. However, this feature has not stopped these banned users from continuing their mass e-mail attacks while logged in, despite the fact that the IP may have already been hardblocked with the "Prevent user from sending e-mail" setting.
I blocked the open proxy IP range 18.104.22.168/16 at 20:49, 28 May 2009 for 5 years with the settings "account creation blocked, autoblock disabled, e-mail blocked". http://en.wikipedia.org/w/index.php?title=Special:Log&type=block&page=User%3A22.214.171.124%2F16
On 13 June 2009, I ran a CheckUser on the IP range and discovered that the banned users' sockpuppets "Drill you like an ocean" and "YAHOO!Hooligan" had sent a few dozen e-mails from that IP range!
I request that this issue be fixed, so that IP blocks with the "prevent user from sending e-mail" setting can also prevent logged in editors from also sending e-mails. These IP blocks are almost exclusively used to deal with banned editors on open proxies, so there should be little to no collateral damage.
*** This bug has been marked as a duplicate of bug 18860 ***