Add DOVEADM_PORT to generate_config.sh

generate_config.sh

@@ -68,6 +68,7 @@ IMAPS_PORT=993
 POP_PORT=110
 POPS_PORT=995
 SIEVE_PORT=4190
+DOVEADM_PORT=127.0.0.1:19991
 
 # Your timezone
 TZ=${TZ}