Hallo Wilfried,

> To find out which is the smtp server I have to send mail to for a
> particular domain I can use the MXPreference[n] property of DnsQuery
> component. But in what case there can be multiple results ? (I tryed a
> few and get only 1 result 'answer#1 in demo program').
> 
> What is the MXExchange[n] property for ?

I'm not sure whether the standard DnsQuery component returns multiple
MX entries. If memory serves I once used Holger's component in ICS sub
directory internet\HLembke for that purpose which works fine:


Request ID         : 2
ID                 : 2
ResponseCode       : 0
OpCode             : 0
Authoritative      : 0
Truncation         : 0
RecursionAvailable : 1
QDCount            : 1
ANCount            : 3
NSCount            : 0
ARCount            : 6
ResponseLen        : 193
QuestionName       : microsoft.com
QuestionType       : 15
QuestionClass      : 1


 MailExchange: maila.microsoft.com
 MailExchange: mailb.microsoft.com
 MailExchange: mailc.microsoft.com

Item for: microsoft.com
 MailExchange: maila.microsoft.com 10
Item for: microsoft.com
 MailExchange: mailb.microsoft.com 10
Item for: microsoft.com
 MailExchange: mailc.microsoft.com 10
Item for: mailb.microsoft.com
 DnsQueryA:    131.107.115.215
Item for: mailb.microsoft.com
 DnsQueryA:    205.248.106.30
Item for: mailc.microsoft.com
 DnsQueryA:    131.107.115.214
Item for: mailc.microsoft.com
 DnsQueryA:    205.248.106.32
Item for: maila.microsoft.com
 DnsQueryA:    205.248.106.64
Item for: maila.microsoft.com
 DnsQueryA:    131.107.115.212

Response dump (193 bytes):
  <0><2><129><128><0><1><0><3><0><0><0><6><9>mic
  rosoft<3>com<0><0><15><0><1><192>
  <12><0><15><0><1><0><0><1>/<0><10><0><10><5>ma
  ila<192><12><192><12><0><15><0><1><0><0><1>/<0>
  <10><0><10><5>mailb<192><12><192><12><0><15><0>
  <1><0><0><1>/<0><10><0><10><5>mailc<192>
  <12><192>C<0><1><0><1><0><0><9><237><0><4><131>ks
  <215><192>C<0><1><0><1><0><0><9><237><0><4><205><248>j
  <30><192>Y<0><1><0><1><0><0><13>+<0><4><131>ks
  <214><192>Y<0><1><0><1><0><0><13>+<0><4><205><248>j
   <192>-<0><1><0><1><0><0><1>/<0><4><205><248>j
  @<192>-<0><1><0><1><0><0><1>/<0><4><131>ks
  <212>



> 
> --
> Rgds, Wilfried
> http://www.mestdagh.biz
-- 
To unsubscribe or change your settings for TWSocket mailing list
please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket
Visit our website at http://www.overbyte.be

Reply via email to