email_server: Use rollback journal for aliases sqlite DB
WAL journaling mode is causing problems with postfix unable to open the database despite ownership and permission changes. Default is the DELETE rollback journal mode. The former gives more performance but in our case, writes are very rare and the DB is used mostly just for reads.
Signed-off-by: Sunil Mohan Adapa sunil@medhas.org
This is a small patch but built on top of !2128 (closed).
