How do I find out which mailing lists I am on?

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For Sympa mailing lists

Visit https://lists.mtu.edu and log in with your email address and your ISO password. At left you will see all lists you are a member of. If you own the list, you will see an Admin link next to the list name.

For Google Groups

Log in at My Google Groups (list request/management) to view all the groups to which you've subscribed.