On 2025-01-25 13:27, duluxoz via Postfix-users wrote: > alerts/reports (to the sys-ops) and by users for internal organisation > communication. Those users that require external email access also have > an email account in an externally-facing domain, and usually use the > appropriate domain when sending email. Occasionally, an internal domain
What do you expect to happen when some internal-to-internal communication at some point gets "Internet" CC? While alice@internal could be mapped to alice@external, the "To:" header would still have bob@internal (and CC: newly_added@internet). Now the newly_added@internet replies to all: alice@external (rewritten) and undeliverable bob@internal. Do you want to remap these addresses (via some automagic), or simply prohibit users from sending (e.g. to prevent some internal documents leaking)? > while filtering on submission sounds like it might be the way to go, we > have to ensure that emails to/from user_x@example.internal can still > reach use...@example.com, etc, but not user_z@somewhere_on_the_internet.com As the internal and external are separate accounts (if I understand correctly) this still seems to be the job for submission stage. _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
