On 16 November 2024 08:35:32 CET, Viktor Dukhovni via Postfix-users
<postfix-users@postfix.org> wrote:
>On Sat, Nov 16, 2024 at 05:17:39PM +1100, Phil via Postfix-users wrote:
>
>> > > Is default_extra_recipient_limit not limiting the number of recipients
>> > > in a
>> > > given message ?
>> >
>> > No. And, what did you have in mind anyway?
>> >
>> > - Limiting the recipient count of incoming SMTP message envelopes?
>> > - Limiting the recipient count of outbound SMTP deliveries
>> > (splitting the envelope for larger messages by doing multiple
>> > deliveries each with at most that many recipients)?
>>
>> My concern is a customers trying to send email to 100s of recipients and
>> getting blocked for bulk mailing so
>>
>> - Limiting the recipient count of outbound SMTP deliveries
>
>The default limit is 50.
>
> $ postconf -d default_destination_recipient_limit
> default_destination_recipient_limit = 50
>
>The customer can still send mail to 100s of recipients, you'll just
>deliver such messages as multiple "envelopes", 50 at a time.
>
>So a 1000 recipient message will result in 20 deliveries (if all to the
>same nexthop).
>
Is it "dangerous" to set this to a very low low number?
Say 1
Besides that it will make many connections and put extra load on the server?
Just curious, I have no problem with the default (yet)
:-)
Danjel
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