On 11/12/20 6:55 AM, Gedalya via Exim-users wrote:
> Hi,
>
> When user1 sends a message to user2 and user3, and user3 also gets generated
> *twice* by a redirect router, user3 ends up getting the message twice.
>
> bcc:
> debug_print = "R: bcc for $local_part@$domain"
> driver = redirect
> data = ${lookup{$local_part}lsearch{CONFDIR/bcc}}
> verify = false
> unseen = true
> repeat_use = false
>
I was able to work around the issue, by doing the deduplication myself:
outgoing_bcc:
debug_print = "R: outgoing_bcc for $local_part@$domain"
driver = redirect
data = ${reduce \
{${addresses:>:${lookup mysql{.....}}}} \
{} \
{${if eqi{$item}{${quote_local_part:$local_part}@$domain}{$value}{$value,
$item}}} \
}
(Note: the key to the lookup is actually the $authenticated_id, in case someone
is trying to find the logic / motivation here)
However, I'm still puzzled as to what the issue is. Is it the fact that the
same address is generated separately as a child address of two recipients? Is
it that it is generated as a child address of itself, and also as a child
address of another address? The documentation simply states that exim does not
do duplicate deliveries, while here it seems it does.
Can someone please help and explain, is this a bug, or am I misunderstanding
something?
Thanks,
Gedalya
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