I have a bogus admin email address infesting a new wiki.
The actual address -- as is on clear display in the wiki's setup file -- is of the form "bob@bobsdomain.org". The infestation, which I cannot kill, or so it seems, is of the form "bob@bobsdomain.org.com".
I have done 'ikiwiki --rebuild --setup mywikis.setup' to no avail. I have grepped everywhere I can think of looking for "org.com." Also no joy.
Signed,
Mystified in Rhode Island!
If you are logging in using passwordauth or httpauth, your email address as used in Preferences is your choice, and you should be able to change it via Preferences.
If you are logging in using OpenID, your email address as used in Preferences comes from your OpenID provider.
Either way, it's stored in the userdb.