From: Wietse Venema (wietseporcupine.org)
Date: Mon Feb 02 2009 - 09:21:02 CST

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Andre Hübner:
> [...] But i wonder how to reduce bounces which could be sent
> permanently between two disabled post-boxes?

Bounce loops happen when things are beoken at both ends. The
Internet mail RFCs demand that bounces are sent with a null envelope
sender address, so that bounces will not loop.

The most likely mechanisms for bounce breakage are procmail filters
that forward mail with a new envelope sender address of the forwarding
user, and software that uses message header addresses, instead of
envelope addresses as required by internet mail RFCs.

> Or should also sending be disabled if mailbox is not accepting messages?

Insufficient data.

        Wietse

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