Scripsit tovis die 20 Oct 2008 09:32:16 +0200 (CEST):
>>>> mta is broken? Does not accept "<> sender".
>>>> Message 1Kobyy-0007J3-CX has been frozen (delivery error message). The 
>>>> sender is <>.

> [...] Also it is sounds
> suspiciouse that "sender <>" should be transported. It could break other
> security settings of mta - made up by Debian package managers, robust and
> safe. I'm affraid that I will solve this situation but other security
> issues would arise!?

Why do you regard "sender <>" as suspicious? It's a regular and useful
part of SMTP. Blocking that sender address will *reduce* the security of
your mail system, because it may cause mails to vanish without a trace.

HTH
T.

-- 
Tilman Schmidt
Phoenix Software GmbH
Bonn, Germany

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