Chris Bird wrote:
Hello List,
Just wondering if someone could help? I have a qmailtoaster running on
CentOS 4.5 and I have a problem sending mail to a customer, they use
our DNS Servers for their DNS and recently (about 9 days ago) they
changed their DNS records for email however when I try to send them an
email I get a bounce back from my toaster saying the message couldn't
be sent due to remote host not accepting the mail -- the problem is it
is trying to send mail to pervious mail server not the new one. Im
sure this is a DNS problem, is there anyway I can refresh DNS on the
toaster like you do in XP ipconfig /flushdns?
The TTL has been and gone on the updated record and I know the record
has changed because the record is hosted on our servers.
Any help much appreciated
Thanks
Chris
"service named restart" will flush the DNS. You need to look at where
your machine is getting the DNS information from (it will use the name
servers located in /etc/resolv.conf). If you're using a "big ISP" they
may be caching longer than they are supposed to (T-Mobile's wireless
caches DNS info for 12 days, regardless of what you set the TTL as).
You may also want to post the domain name to us here on the list or use
a tool like dnsstuff.com to make sure that DNS was done correctly.
