email not being blocked

Hello I am trying to block a certain email for testing and i am still recieving it.

export default {
  async email(message, env, ctx) {
    const block = ["emailhere@gmail.com"]
    if (block.indexOf(message.headers.get("from")) == -1) {
      console.log("done")
      await message.forward("emailhere@proton.me");
      console.log("done yes")
    } else {
      console.log("blocked")
      message.setReject("Address is blocked");
      console.log("blocked yes")
    }
  }
}

export default {
  async email(message, env, ctx) {
    const block = ["emailhere@gmail.com"]
    if (block.indexOf(message.headers.get("from")) == -1) {
      console.log("done")
      await message.forward("emailhere@proton.me");
      console.log("done yes")
    } else {
      console.log("blocked")
      message.setReject("Address is blocked");
      console.log("blocked yes")
    }
  }
}

19 Replies

Chaika•5mo ago

Hey 👋 You're getting the from header -- which is in a specific format RFC 5322. It could be just the email like that, but most email clients also include a name, something like Jack Smith <jack.smith@abcinc.com> https://www.xeams.com/difference-envelope-header.htm

wawa•5mo ago

oh how would I get the email then

Chaika•5mo ago

You could parse it out. There's various parsing libraries out there There's also the from on the message message.from, "envelope from', but that's very easy to spoof and not visible to the end user, can be very different in some cases. End users (like in gmail/etc) only see the header from, the one you're using If you're doing something simple and don't need it to be too robust, you could just do message.headers.get('from').endsWith('<actual@email.address>'). With a list you could do that in .some()

wawa•5mo ago

ty ill try that Hm, that still goes through to my email

export default {
  async email(message, env, ctx) {
    if (!message.headers.get('from').endsWith('email@gmail.com')) {
      console.log("done")
      await message.forward("email@proton.me");
      console.log("done yes")
    } else {
      console.log("blocked")
      message.setReject("Address is blocked");
      console.log("blocked yes")
    }
  }
}

export default {
  async email(message, env, ctx) {
    if (!message.headers.get('from').endsWith('email@gmail.com')) {
      console.log("done")
      await message.forward("email@proton.me");
      console.log("done yes")
    } else {
      console.log("blocked")
      message.setReject("Address is blocked");
      console.log("blocked yes")
    }
  }
}

Chaika•5mo ago

The format is surrounded by brackets if there's a display name can always log and tail too console.log(message.headers.get('from'))

wawa•5mo ago

console.logs arent being printed out

Chaika•5mo ago

You're tailing and not seeing them, o r?

wawa•5mo ago

yes

Chaika•5mo ago

Do you see the email event?

wawa•5mo ago

yesd

Chaika•5mo ago

Using dashboard or wrangler tail? If you're using dashboard make sure you're expanding

wawa•5mo ago

dashboard, I just see "ok" in the console

wawa•5mo ago

Chaika•5mo ago

click on it to expand?

wawa•5mo ago

{
  "outcome": "ok",
  "scriptName": "testemailworker",
  "diagnosticsChannelEvents": [],
  "exceptions": [],
  "logs": [
    {
      "message": [
        "\"z\" <censored@gmail.com>"
      ],
      "level": "log",
      "timestamp": 1706130511913
    },
    {
      "message": [
        "done"
      ],
      "level": "log",
      "timestamp": 1706130511913
    },
    {
      "message": [
        "done yes"
      ],
      "level": "log",
      "timestamp": 1706130515533
    }
  ],
  "eventTimestamp": 1706130511896,
  "event": {
    "rawSize": 6012,
    "rcptTo": "test@jbzis.tech",
    "mailFrom": "censored@gmail.com"
  },
  "id": 0
}

{
  "outcome": "ok",
  "scriptName": "testemailworker",
  "diagnosticsChannelEvents": [],
  "exceptions": [],
  "logs": [
    {
      "message": [
        "\"z\" <censored@gmail.com>"
      ],
      "level": "log",
      "timestamp": 1706130511913
    },
    {
      "message": [
        "done"
      ],
      "level": "log",
      "timestamp": 1706130511913
    },
    {
      "message": [
        "done yes"
      ],
      "level": "log",
      "timestamp": 1706130515533
    }
  ],
  "eventTimestamp": 1706130511896,
  "event": {
    "rawSize": 6012,
    "rcptTo": "test@jbzis.tech",
    "mailFrom": "censored@gmail.com"
  },
  "id": 0
}

Chaika•5mo ago

nice, logs! well you can see the format there

wawa•5mo ago

alright thanks ill try that

Chaika•5mo ago

there is proper parsing libraries you can use too, like https://github.com/jackbearheart/email-addresses. If you wanted to do it the "right way", haven't tried that package before with Workers but it doesn't look like it has any node deps

wawa•5mo ago

I managed to figure it out by doing this

export default {
  async email(message, env, ctx) {
    const senderAddress = message.headers.get('from');
    
    console.log(senderAddress);

    if (!senderAddress.includes('email@gmail.com')) {
      console.log("done");
      await message.forward("email@proton.me");
      console.log("done yes");
    } else {
      console.log("blocked");
      message.setReject("Address is blocked");
      console.log("blocked yes");
    }
  }
}

export default {
  async email(message, env, ctx) {
    const senderAddress = message.headers.get('from');
    
    console.log(senderAddress);

    if (!senderAddress.includes('email@gmail.com')) {
      console.log("done");
      await message.forward("email@proton.me");
      console.log("done yes");
    } else {
      console.log("blocked");
      message.setReject("Address is blocked");
      console.log("blocked yes");
    }
  }
}

Thanks ill take a look at those

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email not being blocked