Hi, I am trying to limit the number of outgoing messages a single local Unix user (web hosting customer) can send in a single day. My first thought was to create a policy server for this, but unfortuneately Postfix does not supply the originating UID to the policy server, and the "sender" field can be easily forged.
So I'm looking for a different way, and found Postdrop does have a "authorized_submit_users" parameter. The idea was to have that call a MySQL stored function that administers the number of sent messages in the database, and returns a boolean indicating wheter the user is allowed to send more messages. Unfortuneately, that does not seem to work either. When I create a config file with my database details, and add it to main.cf: == authorized_submit_users=mysql:/etc/postfix/mysql_outgoing_limit.cf == it gives an error when trying to send mail: == sendmail: fatal: unsupported dictionary type: mysql == This despite that MySQL support is built-in and postdrop is linked to libmysqlclient: == # postconf -m btree cidr environ hash mysql nis proxy regexp static unix # ldd /usr/sbin/postdrop libmysqlclient.so.15 => /usr/local/lib/mysql/libmysqlclient.so.15 (0x00002aaaaaaba000) libz.so.1 => /lib64/libz.so.1 (0x00002aaaaac31000) libm.so.6 => /lib64/tls/libm.so.6 (0x00002aaaaad46000) libdb-4.3.so => /usr/lib64/tls/libdb-4.3.so (0x00002aaaaae9d000) libnsl.so.1 => /lib64/libnsl.so.1 (0x00002aaaab091000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00002aaaab1a7000) libc.so.6 => /lib64/tls/libc.so.6 (0x00002aaaab2bb000) libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00002aaaab4e7000) libpthread.so.0 => /lib64/tls/libpthread.so.0 (0x00002aaaab620000) /lib64/ld-linux-x86-64.so.2 (0x0000555555554000) == Is there any way to make postdrop support MySQL dictionaries, or to limit locally sent e-mail another way? -- Yours sincerely, Floris Bos