+ {${local_part:${lookup{$local_part}cdb\
+ {${extract{directory}{VDOMAINDATA}{${value}/mail-forward.cdb}}}}}\
+ ${if eq {${domain:${lookup{$local_part}cdb\
+ {${extract{directory}{VDOMAINDATA}{${value}/mail-forward.cdb}}}}}}{master.debian.org}{$local_part_suffix} {}}\
+ @\
+ ${domain:${lookup{$local_part}cdb\
+ {${extract{directory}{VDOMAINDATA}{${value}/mail-forward.cdb}}}}}}}