On 1 Dec 98, Rich Kulawiec wrote:
> if an email address is valid is to attempt delivery and wait for the
> bounce; but given that this process could take quite a long time (hours)
> depending on the depth of the mail queues involved or the ultimate
> destination, that won't work well on a web site that is supposed to be
> interactive.
Mm. Last week I e-mailed an invoice to a client, and as usual in those
circumstances, I toggled "confirm receipt" and "confirm reading" in my mail
client. (Just a little extra assurance in case the client says weeks later,
"Sorry, never got it.")
Anyway... forgot to toggle those back off again, and then sent a post to
WC. Which means that everyone on the list whose servers/clients honour
"confirm receipt" requests sent me back a response. And boy, was it
interesting to note how long it took some servers -- especially those in
more out-of-the-way parts of the world -- to reply.
The first batch started arriving within minutes, as you'd expect. Then
another surge after about half an hour. A few more a couple of hours
after that... and a full half-dozen or so that didn't arrive until the next
day, at least 24 hours later!
That was an eye-opener. Kinda reminded me of my days back on Fidonet,
when "express" e-mail meant same-day delivery, more or less. And I had
to pay for any LD charges involved :)
So anyway -- yes, a script that waited for replies from servers to confirm
valid addresses would be problematic, I suspect.
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Brent Eades, Almonte, Ontario
E-mail: [EMAIL PROTECTED]
[EMAIL PROTECTED]
Town of Almonte site: http://www.almonte.com/
Business site: http://www.federalweb.com
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