Postfix: local aliases vs virtual mailboxes

[Stephane Durieux <durieux42@yahoo.fr>]

Hello,

As a newbie I need advices concerning Postfix accounts
method.
I am dithering between aliases to local system
accounts and virtual mailboxes.

I have only a domain to manage (so virtual mailboxes
are not mandatory, only an option) 

But I need a good level of security

So : 

- alias to local accounts with /bin/false for users in
/etc/passwd plus netfilter and pam restriction (ssh
...)

- virtual mailboxes 

Thanks for reply
 



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