mailgun not sending email returning undefined data - node.js

Question

I am trying to implement a simple email confirmation on signup flow using Angular 4, nodejs, mailgun-js and mailgun. The problem is the mailgun send:
mailgun.messages().send(data, function(error, body) {
console.log(body);
});
is timing out with the following error on the front-end:
POST http://localhost:3000/users/sendMail net::ERR_EMPTY_RESPONSE
core.js:1448 ERROR
HttpErrorResponse {headers: HttpHeaders, status: 0, statusText: "Unknown Error", url: null, ok: false, …}
error
:
ProgressEvent {isTrusted: true, lengthComputable: false, loaded: 0, total: 0, type: "error", …}
headers
:
HttpHeaders {normalizedNames: Map(0), lazyUpdate: null, headers: Map(0)}
message
:
"Http failure response for (unknown url): 0 Unknown Error"
name
:
"HttpErrorResponse"
ok
:
false
status
:
0
statusText
:
"Unknown Error"
url
:
null
__proto__
:
HttpResponseBase
The back-end show now errors but the return value (body) is undefined and the email is not sent. This is my complete back-end sendMail module:
const api_key = '<key-f40360259dea7c667ca06d4aee956421>';
const DOMAIN = '<sandbox836cdf3cfe9c467b916fe5bb0d73e7e7.mailgun.org>';
const mailgun = require('mailgun-js')({ apiKey: api_key, domain: DOMAIN });
// ---------------- sendMail variables -----
router.post('/sendMail', (req, res, next) => {
console.log("Email message data: " + JSON.stringify(req.body));
const data = {
from: 'xxxxdev#gmail.com',
to: [req.body.email, 'xxxxxxx#gmail.com'],
name: req.body.firstName,
code: req.body.workshopCode,
subject: req.body.workshopTitle,
text: req.body.messageBody
};
mailgun.messages().send(data, function(error, body) {
console.log(body);
});
});
Both From and To email are valid email address and the req.body displayed in the console.log is the correct data passed from the Front-End.
This the Front-end sendmail module:
sendEmailConfirmation(message) {
const headers = new HttpHeaders();
headers.append('Content-Type', 'application/x-www-form-urlencoded');
this.http.post('http://localhost:3000/users/sendMail', message).subscribe((data) => {
console.log('Mail return data: ' + data); >>>THIS LINE IS NEVER EXECUTED<<<<<<
},
);
}
What am I missing here??.....
I noticed the absence of a res.send so I added the following:
if (error) throw error;
else {
res.send('Email sent');
}
Now I get a forbidden error on the back-end:
(node:10780) UnhandledPromiseRejectionWarning: Error: Forbidden
at IncomingMessage.res.on (C:\connect2Server\node_modules\mailgun-js\lib\request.js:301:17)
at IncomingMessage.emit (events.js:165:20)
at endReadableNT (_stream_readable.js:1101:12)
at process._tickCallback (internal/process/next_tick.js:152:19)
(node:10780) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a ca
tch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)

Answer 1

Please make sure that if you are sending from Europe to also include the host like this:
const mg = mailgun({apiKey: MAILGUN_PRIVATE_API_KEY, domain: MAILGUN_DOMAIN_NAME, host:MAILGUN_HOST});
For Europe, host is api.eu.mailgun.net and for America it's api.mailgun.net from what I know.

Answer 2

Problem solved.....caused by typo in mailgun credentials. The '<' '>' brackets where copied over .....the clue was the Forbidden error.