Mailcow: Move to Nix and Docker-Compose.
diff --git a/mailcow/src/mailcow-dockerized/data/conf/postfix/main.cf b/mailcow/src/mailcow-dockerized/data/conf/postfix/main.cf
index e8da794..3e4b2b1 100644
--- a/mailcow/src/mailcow-dockerized/data/conf/postfix/main.cf
+++ b/mailcow/src/mailcow-dockerized/data/conf/postfix/main.cf
@@ -16,7 +16,7 @@
 alias_maps = hash:/etc/aliases
 alias_database = hash:/etc/aliases
 relayhost =
-mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 [fe80::]/10 [fc00::]/7
+mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 172.22.1.0/24 [fe80::]/10 [fc00::]/7
 mailbox_size_limit = 0
 recipient_delimiter = +
 inet_interfaces = all