This may or may not be true. They could have a group of clustered servers which all respond to the same DNS. Maybe a loadbalancer in front of them which responds and then redirects the traffic to one of the boxes behind it, or several other potential configurations in which they hav more than one machine which responds to the same address. Or, you may be right, they may be cheap and only have one box for each DNS. If it is a reputable ISP they will have more than one box. At least two each for smaller ISPs and many more for larger ISPs. Jim 03/24/02 09:14:05 PM, Jerry Van Brimmer <jerryvb@vei.net> wrote:
If an ISP has "mail.ispxxx.com" for it's POP server, and "mail.isp.xxxx.com" for it's SMTP server, does that mean they only have ONE server for all mail, incoming and outgoing? That sounds a little dangerous to me; the cheap way out.
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