W B Hacker schrieb:

>   first off, using a machine-generated bogus destination address such as;
>
> <[email protected]>
>
> .. is probably going to get you a rejection in ALL cases where the target 
> does 
> *recipient* verification.

Yes, that's the point.

See <http://www.exim.org/exim-html-4.40/doc/html/spec_38.html>:
|  random: Before doing the normal callout check, Exim does a check for
|  a “random” local part at the same domain. The local part is not
|  really random – [...]
|
|  The idea here is to try to determine whether the remote host accepts
|  all local parts without checking. If it does, there is no point in
|  doing callouts for specific local parts. If the “random” check
|  succeeds, the result is saved in a cache record, and used to force
|  the current and subsequent callout checks to succeed without a
|  connection being made, until the cache record expires. 

I'll have to (re-)evaluate that sometimes; a list of hosts that
blindly accept all recipients would be better, of course.

Regards,
-thh

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