Mike D Posted August 1, 2005 Share Posted August 1, 2005 My Exchange 5.5 server (188.8.131.52) has been recently listed twice in the past few days for misdirected bounces. I installed the MS hotfix from KB 837794 and set the registry option to 100. After being relisted I set it to 10. My first question is why was I never listed sooner? I've seen (presumably) bogus NDRs piling up in the IMC outbound queue for months and never had any problems. Is it something new on my side I need to investigate or Spamcop just never tested me before? Second, shouldn't it be sufficient to stop delivery of NDRs to missing return addresses (option 100). Do I need to actually prevent generation of ALL NDRs (option 10) so even legitimate senders aren't advised of typos, etc.? Am I misunderstanding these registry values? Thanks for any help, Mike Link to comment Share on other sites More sharing options...
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