Due to the recent influx of spammers registering with @o2.pl email addresses I have been forced to add this domain to the banned list, as we have done previously with @web.de email addresses.
Existing members should be unaffected, but new users will be unable to register with polish o2 email addresses.
This ban will remain in place until o2.pl increases the security surrounding their registration process, and stops spam bots registering accounts with them.
Apologies for any inconvenience.
QB