leave qualify_domain and qualify_recipient unconfigured, ajust system_aliases

etc/exim4/exim4.conf

@@ -952,7 +952,7 @@ virtual_alias_catchall:
 
 system_aliases:
   driver = redirect
-  domains = $primary_hostname:$qualify_domain
+  domains = $primary_hostname:$qualify_domain:$qualify_recipient
   allow_fail
   allow_defer
   data = ${lookup{$local_part}lsearch{/etc/aliases}}
@@ -982,7 +982,7 @@ system_aliases:
 userforward:
   driver = redirect
   check_local_user
-  domains = $primary_hostname:$qualify_domain
+  domains = $primary_hostname:$qualify_domain:$qualify_recipient
   file = $home/.forward
   no_verify
   no_expn

etc/exim4/exim_local.conf

@@ -1,4 +1,5 @@
-qualify_domain = example.com
+#qualify_domain = example.com
+#qualify_recipient = fqdn.example.com
 
 hide mysql_servers = localhost/vmail/vmail/password
 

install.sh

@@ -118,6 +118,7 @@ systemctl enable srsd
 systemctl start srsd
 
 # exim config
+fqdn=`hostname -f`
 maildomain=`hostname -d`
 sed -i 's/size 10M/daily/g' /etc/logrotate.d/exim4-paniclog
 install --owner=Debian-exim --group=Debian-exim --mode=640 /dev/null /etc/exim4/relay_domains
@@ -131,6 +132,7 @@ chown Debian-exim:Debian-exim /etc/exim4/skip_greylisting_hosts
 chmod 640 /etc/exim4/skip_greylisting_hosts
 sed -i "s|example.com|$maildomain|g" /etc/exim4/skip_greylisting_hosts
 sed -i "s|password|$VMAILPASS|g" /etc/exim4/exim_local.conf
+sed -i "s|fqdn.example.com|$fqdn|g" /etc/exim4/exim_local.conf
 sed -i "s|example.com|$maildomain|g" /etc/exim4/exim_local.conf
 touch /etc/exim4/srsd.secret
 chmod 640 /etc/exim4/srsd.secret