Omezeni poctu adresatu v jedne zprave - sendmail
Lubos Kaspar
lk na cnb.cz
Pátek Duben 11 16:29:30 CEST 2003
> Date: Thu, 10 Apr 2003 13:41:20 +0200
> From: Michal Dobes <dobes na tesnet.cz>
> To: sendmail na linux.cz
> Subject: Re: Omezeni poctu adresatu v jedne zprave - sendmail
>
> Petr Barta wrote:
> > Preji prijemne odpoledne,
> > mam maly dotaz - je mozne nejakym zpusobem natvrdo omezit pocet
> > prijemcu zpravy, kterou sendmail dostane ke zpracovani? (V postfixu je na
> > to parametr smtp_destination_recipient_limit, v sendmailu jsem na zadny
> > takovy neprisel.) Pomuze i nakopnuti na spravny odkaz... :-)
>
> KOP: confMAX_RCPTS_PER_MESSAGE :-)
V sendmail.cf je to "O MaxRecipientsPerMessage".
V RFC 2821 se k tomu v kap. "4.5.3.1 Size limits and minimums" pise:
recipients buffer
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. The general principle that relaying SMTP servers
MUST NOT, and delivery SMTP servers SHOULD NOT, perform validation
tests on message headers suggests that rejecting a message based
on the total number of recipients shown in header fields is to be
discouraged. A server which imposes a limit on the number of
recipients MUST behave in an orderly fashion, such as to reject
additional addresses over its limit rather than silently
discarding addresses previously accepted. A client that needs to
deliver a message containing over 100 RCPT commands SHOULD be
prepared to transmit in 100-recipient "chunks" if the server
declines to accept more than 100 recipients in a single message.
--
Lubos Kaspar
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