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mail.from="service@brookes.com";
mail.To="brookes@brookes..com";
mail.BodyFormat=MailFormat.Text;
mail.Body="a test smtp mail.";
mail.Subject="r u ok?";
SmtpMail.SmtpServer="localhost";
SmtpMail.Send(mail);
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The server rejected one or more recipient addresses. The server response was: 550 5.7.1 Unable to relay for brookes@brookes.com ²úÉúÕâ¸ö´íÎóµÄÔ­Òò³ýÁ˵ØÖ·´íÎóµÄ¿ÉÄÜÍ⣬»¹ÓÐÒ»¸öÖØÒªÔ­Òò¡£ÈçÉÏÎÄÌáµ½µÄ£¬IIS²¢²»´øÓÐÕæÕýµÄÓʼþ¹¦ÄÜ£¬Ö»ÊǽèÓÃÒ»¸ö¡°SMTPÐéÄâ·þÎñÆ÷¡±ÊµÏÖÓʼþµÄת·¢¡£ÔÚMSDNÖУ¬ÓÐÈçÏÂÌáʾ£º Èç¹û±¾µØ SMTP ·þÎñÆ÷£¨°üÀ¨ÔÚ Windows 2000 ºÍ Windows Server 2003 ÖУ©Î»ÓÚ×èÈûÈκÎÖ±½Ó SMTP ͨÐÅÁ¿£¨Í¨¹ý¶Ë¿Ú 25£©µÄ·À»ðǽ֮ºó£¬ÔòÐèÒª²éÕÒÍøÂçÉÏÊÇ·ñÓпÉÓõÄÖÇÄÜÖ÷»úÄÜÓÃÀ´ÖÐת·¢Íù Internet µÄ SMTP ÏûÏ¢¡£
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Èç¹û²»Ê¹ÓÃIIS×Ô´øµÄSMTPÐéÄâ·þÎñÆ÷¶øÊ¹ÓÃÆäËûÕæÕýµÄÓʼþ·þÎñÆ÷£¬ÈçIMail£¬ExchangeµÈ£¬³£³£Óöµ½·þÎñÆ÷ÐèÒª¼ÄËÍÕßÉí·ÝÑéÖ¤µÄÎÊÌ⣨ESMTP)¡£ÔÚʹÓÃÐèÒªÑéÖ¤¼ÄËÍÕßÉí·ÝµÄ·þÎñÆ÷ʱ£¬»á³öÏÖ´íÎó£º The server rejected one or more recipient addresses. The server response was: 550 not local host ckocoo.com, not a gateway ÒÔǰÔÚASPÖУ¬Óöµ½ÕâÖÖÎÊÌâûÓÐʲô½â¾öµÄ¿ÉÄÜ£¬Ö»ÄÜÖ±½ÓʹÓÃCDO×é¼þ£¨CDONTSµÄ¸¸¼¶×é¼þ£©£º
conf.Fields[CdoConfiguration.cdoSMTPAuthenticate].Value=CdoProtocolsAuthentication.cdoBasic;
conf.Fields[


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