Opened 8 years ago
Last modified 8 years ago
#421 new enhancement
Turn on reject_sender_login_mismatch — at Initial Version
Reported by: | andersk | Owned by: | |
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Priority: | normal | Milestone: | |
Component: | Keywords: | opinionated | |
Cc: |
Description
To help cut down on outgoing spam, we should require that mail sent directly through Scripts carry a matching @scripts.mit.edu address or an address at a matching Scripts vhost. After all, if you want to send mail from @mit.edu, @gmail.com, etc., you should be sending it through outgoing.mit.edu, smtp.gmail.com, etc.—a mismatch here would be an SPF violation anyway.
I think this would be achieved by smtpd_sender_restrictions = reject_sender_login_mismatch, with $smtpd_sender_login_maps configured in correspondence with our $virtual_alias_maps.
This probably implies disabling SMTP to localhost:25.