Usually, DNS communicates over UDP, the principal exception being when the response is so large that it won't fit in a UDP packet. I'm not really familiar with 2k DNS ( we're a BIND shop, and so has been virtually every place I've worked at...Which is probably indicative of how widely-deployed BIND is over 2k. ;) ), but maybe it has some kind of option to refuse TCP requests? Probably worth checking M$'s Knowledge Base, starting with this article: http://support.microsoft.com/default.aspx?scid=http://support.microsoft. com:80/support/kb/articles/q287/5/13.ASP&NoWebContent=1
-Simon > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Scott Erwin > Sent: Wednesday, July 21, 2004 11:36 AM > To: [EMAIL PROTECTED] > Subject: [IMail Forum] DNS error messages > > I know this has been addressed somewhat before but here goes again. > I started seeing the following DNS errors on my W2k DNS server > > The DNS server received a bad TCP-based DNS message from > 10.10.1.2. The packet was rejected or ignored. > > That IP is my Imail server also running W2k. DNS is not > installed on that machine. > These error messages began showing up (20 to 30 per day) > when I enabled the fiveten, spamhaus, and SpamCop blacklists. > > The Imail server is configured to use the W2k DNS server. > Should I change that to use my ISP's DNS? > Should I worry about this at all? > > > Thanks > Scott > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
