增加EmailAddress类

Masuit.Tools.Abstractions/Models/EmailAddress.cs

@@ -0,0 +1,56 @@
+using DnsClient;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net;
+
+namespace Masuit.Tools.Models
+{
+    public class EmailAddress
+    {
+        public string Username { get; set; }
+        public string Domain { get; set; }
+
+        public List<IPAddress> SmtpServers
+        {
+            get
+            {
+                var nslookup = new LookupClient();
+                var query = nslookup.Query(Domain, QueryType.MX).Answers.MxRecords().SelectMany(r => Dns.GetHostAddresses(r.Exchange.Value)).ToList();
+                return query.FindAll(ip => !ip.IsPrivateIP());
+            }
+        }
+
+        public EmailAddress(string email)
+        {
+            var parts = email.Split('@');
+            Username = parts[0];
+            Domain = parts[1];
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="email"></param>
+        /// <returns></returns>
+        public static implicit operator EmailAddress(string email)
+        {
+            return new EmailAddress(email);
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="email"></param>
+        public static implicit operator string(EmailAddress email)
+        {
+            return email.ToString();
+        }
+
+        /// <summary>Returns a string that represents the current object.</summary>
+        /// <returns>A string that represents the current object.</returns>
+        public override string ToString()
+        {
+            return Username + "@" + Domain;
+        }
+    }
+}