rcirc-server-alist

rcirc-server-alist is a variable defined in `rcirc.el'.
Its value is

(("irc.freenode.net" :channels ("#rcirc")))

Documentation:
An alist of IRC connections to establish when running `rcirc'.
Each element looks like (SERVER-NAME PARAMETERS).

SERVER-NAME is a string describing the server to connect
to.

The optional PARAMETERS come in pairs PARAMETER VALUE.

The following parameters are recognized:

`:nick'

VALUE must be a string. If absent, `rcirc-default-nick' is used
for this connection.

`:port'

VALUE must be a number or string. If absent,
`rcirc-default-port' is used.

`:user-name'

VALUE must be a string. If absent, `rcirc-default-user-name' is
used.

`:password'

VALUE must be a string. If absent, no PASS command will be sent
to the server.

`:full-name'

VALUE must be a string. If absent, `rcirc-default-full-name' is
used.

`:channels'

VALUE must be a list of strings describing which channels to join
when connecting to this server. If absent, no channels will be
connected to automatically.

`:encryption'

VALUE must be `plain' (the default) for unencrypted connections, or `tls'
for connections using SSL/TLS.

You can customize this variable.