On Thu, 12 May 2011 16:00:38 +0200
Michelle Konzack <linux4miche...@tamay-dogan.net> wrote:
> Which RFC? Limiting the "recipients per envelope" is legitim.
Limiting it to 1 is pushing it. RFC 5321 says:
"The minimum total number of recipients that MUST be buffered is 100
recipients. Rejection of messages (for excessive recipients) with
fewer than 100 RCPT commands is a violation of this specification."
Additionally, limiting it to 1 will have very undesirable side-effects.
Mailman, for example, sends messages out in chunks of 30 recipients
at a time by default. If all 30 recipients are on a server that only
accepts one at a time and your mail server retries every 10 minutes, the
last recipient will receive the message 5 hours after the first recipient.
That's pretty unfriendly behaviour.
Regards,
David.
