root@loong64-osuosl-01:~# cat /etc/exim4/passwd.client 
# password file used when the local exim is authenticating to a remote
# host as a client.
#
# see exim4_passwd_client(5) for more documentation
#
# Example:
### target.mail.server.example:login:password
smtp.strato.de:loong64-osuosl-01@buildd.eu:(password redacted)
root@loong64-osuosl-01:~#

root@loong64-osuosl-01:~# cat /etc/fetchmailrc
set postmaster "root"
set bouncemail
set no spambounce
set properties ""
set syslog
set daemon 300

poll imap.strato.de with proto IMAP
       user 'loong64-osuosl-01@buildd.eu' there with password '(password redacted)' is 'buildd' here ssl
root@loong64-osuosl-01:~#