To me, this looks like an issue which could be solved in a dedicated router which will fail e-mail addressed to system users. However, there might be packages that need their user to be able to receive mail.
Yeah, I thought of that, but I'm having trouble figuring out where to put it. It needs to go before the first use of check_lcoal_user, but after 400_exim4-config_system_aliases, so that system users (such as root) aliased to normal users continue to work. However, 300_exim4-config_real_local uses check_local_user.
It seems to me that 300_exim4-config_real_local should be moved to 550 (or perhaps move the contents directly into 600_exim4-config_userforward, at the start of the file). The real-* addresses only exist to serve the syntax-errors-to setting in the userforward router, so that seems like the right thing to do to me. It means that real-* won't work for addresses aliased in the system aliases file, but IMO that's a _good_ thing. For example, I don't want [EMAIL PROTECTED] getting delivered to /var/lib/clamav/Maildir/, under any circumstances.
What do you think?
- Marc
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