GMail is trying too hard

This is the first time ever that I'm seeing such a mailer daemon error: Mail Delivery Subsystem <mailer-daemon@gmail.com> to me This is an automatically generated Delivery Status Notification Delivery to the following recipient failed permanently: fink-beginners @ lists.sourceforge.net Technical details of permanent failure: TEMP_FAILURE: Too many connections to lists.sourceforge.net Anybody else is facing this problem?