sendmail limits

Wojciech Puchar wojtek at
Tue Mar 10 07:43:26 PDT 2009

> On Tue, 10 Mar 2009 08:51:12 +0100 (CET), Wojciech Puchar <wojtek at> wrote:
>> i'm just asking for sure - do sendmail has any limits of how much
>> adresses is put in CC/BCC in single mail?
> Yes, of course.  There is *support* for a limit, but the default
> is to accept a large number of recipients per-message:
>  confMAX_RCPTS_PER_MESSAGE  MaxRecipientsPerMessage
>      [default: infinite] If set, allow no more than the specified
>      number of recipients in an SMTP envelope.  Further recipients
>      receive a 452 error code (i.e., they are deferred for the
>      next delivery attempt).
> You can set this easily, by modifying `' to include:
>  define(`confMAX_RCPTS_PER_MESSAGE', `20')
thank you very much. that's what i was looking for.

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