email duplicate suppression

[Barry Kwok]

Hi,

MTA: postfix 2.3.3

We are using MailScanner's archive rules to auto forward email.
e.g
FromOrTo: abc at def.com         supervisor at def.com

But if someone send an email to abc at def.com and cc to supervisor at def.com,
supervisor at def.com will then get two copies of emails.

Is there any way in Postfix or MailScanner to suppress the duplication.


--barry
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