Merged
requested to merge maximaweb/ispconfig3:5533-idn-encode-support-for-amavis-leading-dot into develop
Amavisd supports wildcards by performing decreasingly specific SQL lookups:
9 - lookup for user+foo@sub.example.com
8 - lookup for user@sub.example.com
7 - lookup for user+foo
6 - lookup for user
5 - lookup for @sub.example.com
3 - lookup for @.sub.example.com
2 - lookup for @.example.com
1 - lookup for @.com
0 - lookup for @. (catchall)https://www.ijs.si/software/amavisd/README.lookups.txt
However idn_to_*() returns an empty string if the domain has a leading dot
which means lookups 0-3 cannot be used. This is fixed by removing the
leading dot before encoding or decoding and adding it back just before
returning the domain.
Now all amavis SQL lookups are possible.
Closes #5533 (closed)