This isn't bad. Only thing I would do differently is possible setting both
IPs in your MX records, the new one having a lower priority, before you do
the IP change. This can only be done though, if you know the new IP address.
domain IN MX 10 old.ip.add.ress
IN MX 20 new.ip.add.ress
This way, even slower-to-update servers will try to send to the new one once
the old one is dead. After the IP change is live, remove your old MX 10 and
make your MX 20 the new 10.
_____
From: Bill Kwok [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 19, 2007 9:12 AM
To: qmailtoaster-list
Subject: [qmailtoaster] Steps to change the IP address of qmail server
Dear all,
I am planning to change my ISP and hence the IP address of my server is
going to be changed.
Due to limited resources, I can't setup another server while switching over
to the new IP. My server has around 60 users. I plan to:
1. Shorten the refresh time of my MX record to 900 (15 mins) from the
current 3600 (1 hour) for 4 days to make sure all DNS gets the changes;
2. change the MX record to the new IP address and plug my server to the
new network
Does the above steps work and are they enough? My current MX record use the
following settings:
refresh = 3600 (1 hour)
retry = 900 (15 mins)
expire = 3600000 (41 days 16 hours)
default TTL = 86400 (1 day)
Your comments are appreciated.
Best regards,
Bill
