It sounds like you're already done this, but I thought I'd toss in a little hindsight in case it helps anyone in the future.
On 6/5/06, Kin Wong <[EMAIL PROTECTED]> wrote: > I didn't do everything in the same order as you specified, partly > because I don't know IPCop and I was working from memory of your email. > As a result, I lost about 5 minutes of uptime -- not bad but not ideal. > Losing 5 minutes of connection for your SMTP server doesn't actually matter that much. Any external server that's trying to send to your server will just try again in a few minutes. 4 hours is generally the default setting for when the sending mail server starts to get worried and alerts the original sender that it couldn't make the delivery. One way to mitigate this is to make sure you have secondary DNS servers on a separate netblock from your primary. That way, if your primary DNS server changes, you can force update your secondaries with the new primary IP and zone files, and you're off to the races. Editing the files ahead of time and being all prepared, and you can keep it down to less than 60 seconds of downtime (yes, I've done it, and if it comes up again, I'll try to do it even faster next time). > One step that needs to be added after adding an alias to the red > interface is to add redundancy to the port forwarding. All the port > forwarding from the default ip address needs to be replicated with the > actual old default ip address. All the port forwarding from the old > alias ip address needs to be replicated with the new alias ip address. > Now you have redundancy for both the old and new static ips. > Just a little gotcha, depending on your ISP and circumstances - always check with your ISP to make sure you can have all your IPs, new and old, active at once. From personal experience: At my last job, we had a Shaw business connection, and 8 static IPs. Shaw's old Cybersurfr modems had (according to the people at tech support) a hard limit of 8 IPs that could be stored in the device at once. So, the first time I tried that trick of getting all 16 active at once, it was all tears and frustration. ;-) Ian _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
