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We have a mailserver running on Postfix. Only authenticated users are allowed to send emails.

One client has a multifunction printer, which is configured to send scanned documents to an email recipient. Unfortunately that printer is an older model and doesn't support smtp-auth.

I know I can use check_client_access to allow the static IP of this client for unauthenticated mail. The following configuration would do that:

smtpd_sender_restrictions =
  check_client_access hash:/etc/postfix/allow_relay,
  permit_sasl_authenticated,
  permit_mynetworks,
  reject_non_fqdn_sender,
  reject_unknown_sender_domain,
  reject_unauth_pipelining

What I would like to do is to only accept unauthenticated email if the IP and the sender match with a list.

Just adding a check_sender_access to the sender restrictions would result in allowing Mail from the specified IP or the specified sender.

So how could I configure Postfix to combine those two, if possible at all?

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1 Answer 1

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By configuring a restriction class that checks the client IFF the sender matches $foo, or vice versa.

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