smtp load balancer???

[Chris Conn]

    [ The following text is in the "ISO-8859-1" character set. ]
    [ Your display is set for the "US-ASCII" character set.  ]
    [ Some characters may be displayed incorrectly. ]

> I have a toaster removed from DNS now for over two weeks awaiting an OS 
> upgrade, and it is still handling thousands of messages a day. A good 
> load balancer will solve that problem.

So will reducing the record's TTL to a small value.  For instance, your 
domain "pixelhammer.com" has a MX with priority of 1 called 
"avhost.tls.net".  The TTL for that hostname is 24 hours....

Set it to a number of seconds instead of a number of hours and you no longer 
need worry, except for the odd broken DNS implementation, which should be rare.

BIND is your friend:

avhost      5       IN      A       65.196.224.20
avhost	    5       IN      A       65.196.224.81

gives you a 5 second TTL on both records.  Remove one, reload DNS, and 5 
seconds later it never existed.

Chris

------------------------ MailScanner list ------------------------
To unsubscribe, email jiscmail at jiscmail.ac.uk with the words:
'leave mailscanner' in the body of the email.
Before posting, read the Wiki (http://wiki.mailscanner.info/) and
the archives (http://www.jiscmail.ac.uk/lists/mailscanner.html).

Support MailScanner development - buy the book off the website!