Re: The errant email



Brian Sullivan <briansullivan@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
On Mon, 1 Oct 2007 16:24:16 +0100, Dave Baker wrote:

Emails don't miraculously get delayed for exactly one hour.

Actually I suspect it is pretty common for emails to get delayed by one or
more even hours.

As I understand it, typically the way SMTP transfer works is that when a
failure to connect or transfer correctly occurs the transaction is put into
a retry queue to be retried for transmission after some configurable period
of time (and for some configurable number of times before a permanent
failure is recorded and reported to the sender).

A common retry interval would be 1 hour.

Exactly right and, if it was a connection failure, could happen.

That said, it's more likely that retries before backoff would mean that
_precisely_ one hour is a little suspicious.

The stupidity here is depending on standard email for this kind of vital
transmission. But this is something that all parties agreed to apparently.
I guess none of them had competent IT people to point out this issue?

Too true.

Mark

.



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