>I am having strange periodic problems sending mail. When I connectto my ISP I can send mail through 66.59.162.165 but not through>66.59.162.166. This is listed as the router number in the Networksystem preferences. I am using a modem and therefore not going through a router.
In this context router = gateway. That's your next hop in the network; the place to where your Mac sends all packets. It was assigned to you during the PPP initialization sequence when you first connected.
"send mail through" makes no sense. Those IPs are not mail servers.
What I meant to say was when I am connected to 66.59.162.165 everything works but when I am connected to 66.59.162.166 everything works except for sending email.
Need more details - exactly what error are you getting?
Currently I get the error "I said: USER mchapman And then the POP server said: -ERR Unable to connect to external server."
That sort of sounds like an ISP configuration error. If it is, their smtp server isn't recognizing that 66.59.162.166 is within their set of IP addresses.
Most ISPs SMTP servers are configured to only forward mail for their users. This is usually done in one of three ways.
The first and almost always used is to forward mail originating from within the ISPs network. This is done by comparing the IP address for the incoming message to a list of valid addresses. This may be the problem you are having.
Since you always have to authenticate access to your POP mail account the ISP can use this to implicitly authenticate access to their SMTP server. In other words, after successfully reading your mail you can send a message. There is usually a short period of time after reading your mail in which you can start to send mail. The biggest problem with this method is that the mail program may attempt to send before the POP server authenticates. It's possible this is your problem and the correlation to router address (165 vs 166) is either coincidence or some delay or other problem introduced by the different routers.
The third method is explicitly authenticating SMTP access. This is done using your user ID and password same as your POP mail.
While you might be able to work with your ISP to fix the problem if it's one of the first two methods it might be simpler to set up SMTP authentication anyway. This allows you to still send mail even if you aren't connecting through your ISP and is more reliable than piggybacking on POP authentication. This is pretty much required for laptop setups but can apply to others to.
What mail server are you trying to talk to?
mail.porchlight.ca
Thanks, Mark
>My ISP claims not to recognize those numbers. Can anybody tell mewhat they refer to?
NetRange: 66.59.128.0 - 66.59.191.255
OrgName: GT Group Telecom Inc.
BTW these numbers are (or should be) functionally identical. Each one is the router for a bank of modems. You connect to one or the other depending on the randomness of connecting to the modem bank.
--
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
"I'm a designated driver on the Information Super Highway"
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