Cisco maillists

Since you have to work with different equipment and large networks, sometimes there are controversial questions that are very difficult to find in books / the Internet, it is much better to ask your question on the mailing lists, and even talk with like-minded people for one thing. Therefore, I bring to your attention a couple of mailing lists on a network topic:
1) puck.nether.net Personally, I am subscribed to cisco-nsp. Regarding the people who communicate there, the author of books that appeared on the Cisco Press was noticed, and a fairly large number of people with CCIE certificates.
2) groupstudy mailing lists are designed to help each other with labs to prepare for CCIE.
UPD
More lab preparation newsletters for CCIE certification onlinestudylist