Re: [exim] Exim has a bad queue handling?

--On 23 October 2006 12:57:00 +0100 John Robinson
<john.robinson@???> wrote:

> On 23/10/2006 09:57, Daniel Tiefnig wrote:
>> Yes. There is a problem with exims retry mechanism if a remote system is
>> greylisting based on recipient address, sender address and sender IP. As
>> exim gets a temporary error for "RCPT TO", it thinks the mailbox is
>> currently not available. Exim can't know that another e-mail in the
>> queue with a different sender address could actually get through to the
>> recipient. With a moronic greylisting setup (no auto-whitelisting) on
>> the remote side and a lot of emails this really is a problem. One may
>> choose at which side the problem is, though.
>
> Is Exim designed to be clever, and not to attempt to deliver further
> messages to the same recipient? I thought it was just for hosts that
> were down, but I wonder if there's an option to disable this cleverness
> if it's not compatible with greylisting at remote sites.
>
> Cheers,
>
> John.

For the sending server to be able to do this, there'd need to be some way
that the receiving server could announce that it was greylisting. For
example, an enhanced error code. U


--
Ian Eiloart
IT Services, University of Sussex