On Fri, Feb 13, 2015 at 09:33:52AM +1100, Carl Brewer wrote: > Feb 13 08:36:33 postfix/lmtp[8436]: CBA4A1B3D4A3: > to=<c...@aboc.com.au>, > relay=rollcage3.bl.echidna.id.au[/var/imap/socket/lmtp], delay=0, > delays=0/0/0/0, dsn=2.1.5, status=deliverable (250 2.1.5 ok)
As a work-around: The Postfix lmtp(8) delivery agent implements the "lmtp_generic_maps" parameter, which avoids the backscatter issues with wildcard virtual(5) rewrites: main.cf: default_database_type = cdb indexed = ${default_database_type}:${config_directory}/ lmtp_generic_maps = ${indexed}downcase-domains downcase-domains: # caseless key # canonical form @aboc.com.au @aboc.com.au ... Makefile: DBEXT=cdb DBTYPE=cdb all: \ downcase-domains.${DBEXT} # Mind your TABs downcase-domains.${DBEXT}: downcase-domains postmap ${DBTYPE}:downcase-domains Adjust to "hash" or "lmdb" (and corresponding file extensions) if you prefer those to "cdb". -- Viktor.