Dump outsourcing your caching DNS and take it in house. You can setup bind or another DNS directly on your mail server and have much better results and reliability.
There are many here who can help get you setup with sample config files. Kevin Bilbee > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Stephen Guluk > Sent: Friday, September 09, 2005 4:17 PM > To: [email protected] > Subject: Re: [IMail Forum] Strange occasional random issue > > > Oh what a day from hell...... How do you pick a good DNS server? I > had one from Verio that I've used for the last couple years > 161.58.158.113 > Ipswitch Techs had me try one of there's while we were testing all > the various problems. Worked well with theirs so I assumed that mine > was not too good... I called Verio where my servers are hosted and > they could not tell me much information about the DNS IP I posted > above. They suggested that because it was a cache DNS server it looks > like it may not always be available and maybe retired soon... Quite > frankly I think the Gal knew less than I did about the server... None > the less I tracerouted to the primary dns servers (ns1 and > ns2 .DN.net) and used these in the SMTP area of iMail 8.21 > These worked poorly and allowed my queue to grow to over 100 emails > and stay at that point . Restarting the SMTP server would clear half > of them but then back to the same state... People started calling > because there were errors such as "553 Requested action not taken: > Relaying not permitted" or "553 sorry, that domain isn't in my list > of allowed rcpthosts (#5.7.1)"... I switched back to the IP above and > it immediately cleared the cache and now hovers around 7 or 8 emails > pending. Why does one DNS server IP work better than others? > 207.153.206.126 and 161.58.158.45 (bound to ns1 and 2 as mentioned > above) failed to perform worth while. > > You would think a company like Verio would have great DNS servers? Am > I missing something? I'm thinking of moving to Rackspace at the end > of the month and hope they can help. > > Regards, > > Steve > > > > > > On Sep 9, 2005, at 10:49 AM, Darin Cox wrote: > > > Ok, so according to this the mail server could not connect to the > > primary > > rackspace.com mail server. > > > > According to http://dnsreport.com/tools/dnsreport.ch? > > domain=rackspace.com, > > everything looks good for rackspace.com, so this may have been a > > temporary > > issue with the rackspace.com mail server, or connectivity between your > > server and theirs. > > > > Darin. > > > > > > > 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/ > --- > [This E-mail scanned for viruses by Declude Virus] > > --- [This E-mail scanned for viruses by Declude Virus] 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/
