[Feedback needed] Execution control of plugins about haraka HOT 4 CLOSED

Any ideas why?

Yes, remove the line with the bare return; Hooks must always call next when they're completed. If not, they get timed out after 30 seconds.

Improved:

exports.hook_rcpt = function (next, connection, params) {
    const rcpt = params[0];
    const address = rcpt.address();

    const dropPattern = /^foo.*@mailsac\.com$/i;

    if (dropPattern.test(address)) {
       connection.loginfo(this, `Dropping message to: ${address}`);
    }

    next();
}

from haraka.

Thank you @msimerson for the prompt response.
Nevertheless, the purpose of the custom plugin is to silently drop a message if the recipient conforms to the pattern foo*@mailsac.com

Your suggestion appends a log entry that a message is to be dropped, but it isn't (it's "promoted" to the next chain of commands and reaches the wildduck plugin).
As mentioned in the original comment, the purpose of the plugin is to conditionally skip WildDuck.

Can you help ?

from haraka.

You asked why it paused for 30 seconds. I answered your question.

To change what Haraka does when you call next, look into next return codes

from haraka.

Thank you for pointing me to the proper section of the documentation.

For anyone encountering this thread, the solution was to use next(OK) in case the recipient's address matched the pattern.
Quoting from the documentation:

After a plugin calls next(OK), no further plugins on that hook will run.

from haraka.