changing my mail address

wambacher@posteo.de

From: wambacher@posteo.de
To: pgsql-general@lists.postgresql.org
Date: 2018-03-17T15:45:06Z
Lists: pgsql-general
Hi,

how can i change my mail adress for the postgresql mailing lists? adding 
my new address worked, but how do i get rid of the old one?

regards

walter