Web Reference: When alias database search fails, and the recipient localpart contains the optional recipient delimiter (e.g., user+foo), the search is repeated for the unextended address (e.g., user). The propagate_unmatched_extensions parameter controls whether an unmatched address extension (+foo) is propagated to the result of table lookup. Aug 11, 2015 · The documentation claims that I can add aliases in a file (like /etc/postfix/virtusertable) and then use the "virtual_maps" directive to point to it. This does not appear to be working, however. May 23, 2020 · I think the issue is that when Postfix verifies the recipient address in the database, it first looks up the alias, which has a match in the database. However, the given alias target has no matching mailbox in the database.
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