[Mimedefang] Re: Justifying greylisting to management

[David F. Skoll]

Tomasz Ostrowski wrote:

> This could be avoided if sendmail would tempfail "data" requests if
> any "rcpt to" request tempfailed and every "rcpt to" request tempfailed
> or permfailed.

But the RFC says that an SMTP client MUST NOT issue a DATA command unless
at least one RCPT succeeded, so Sendmail is within its rights to issue
a 5xx failure code.

Regards,

David.