Refactor DNS and SMTP configurations; add system DNS management

- Updated DNS server address configuration to use BindAddress and DnsPort.
- Enhanced email submission to utilize BindAddress for SMTP server address.
- Improved error messages for unknown recipient domains.
- Introduced a new OrderedMap structure for route management.
- Added system DNS management functions for Linux, Darwin, and Windows platforms.
- Created new dashboard services for DNS configuration and overview.
- Updated UI to include Proxy Rules section and improved descriptions.
- Added new utility functions for handling DNS configurations.

1 files changed, 1 insertions, 2 deletions

diff --git a/models/dns/a.go b/models/dns/a.go
index b3c7f38..3965e0e 100644
--- a/models/dns/a.go
+++ b/models/dns/a.go
@@ -9,6 +9,5 @@ type ARecord struct {
 	DomainID uint   `gorm:"not null;index" json:"domain_id"`
 	Name     string `gorm:"not null;default:@" json:"name"`
 	Address  string `gorm:"not null" json:"address"`
-	Port     int    `gorm:"default:0" json:"port"`
-	TTL      uint32 `gorm:"not null;default:300" json:"ttl"`
+	TTL      uint32 `gorm:"not null;default:1" json:"ttl"`
 }