Re[2]: [Exim] Sender Verification with Callback

On our mailservers (over 300k/day connects) this feature works good,
but for the first time you'll need to check log file for "broken"
mailing-list and fix exim configuration file. First look shows, that
messages from sourceforge, hewlett-packard ML's and cnn.com dropped very
frequent :))

------------- Original message -----------
> From: exim@???
> To: iforbes-exim@???
> Subject: [Exim] Sender Verification with Callback
> Date: Thursday, November 29, 2001 at 16:37

CA> On Thu, Nov 29, 2001, I. Forbes wrote:
>> Hello All
>>
>> I am busy having a look at the functionality of "Sender Verification
>> with Callback".
>>
>> The documentation recommends this for low volume sites only.
>>
>> I assume if a sender is rejected, that the rejected address will end
>> up on a "hints" database and thus not be tested over and over.
>>
>> However is there a "positive" hints database feature that will record
>> the names of successful call back tests, and remember these
>> addresses for a period, so as to lower the amount of load on the
>> box?

CA> Doesn't seem so.

CA> sourceforge is testing my box 2 (up to 4) times whenever I send a
CA> mail to them. I now unsubscribed from their mailing lists, this
CA> seems to be too stupid (they don't want to use dsn.rfc-ignorant.org).

CA> PS: they test 2 times for envelope and header sender address,
CA> even though both MX records point to the same machine.
CA> Sometimes they test 4 times, I don't know why...