Express Nodemailer in nuxt serverMiddleware - Error: spawn /usr/sbin/sendmail ENOENT - express

Question

I'm trying to send a simple POST request for a contact form in a static site built on top of NuxtJs.
Im trying to use express and nodemailer in the serverMiddleware Nuxt provides
here's the code from api/contact.js
const express = require('express')
const nodemailer = require('nodemailer')
const validator = require('validator')
const xssFilters = require('xss-filters')
const app = express()
app.use(express.json())
const rejectFunctions = new Map([
['name', a => a.trim().length < 4],
['email', v => !validator.isEmail(v)],
['message', v => v.trim().length < 10]
])
const validateAndSanitize = (key, value) => {
return (
rejectFunctions.has(key) &&
!rejectFunctions.get(key)(value) &&
xssFilters.inHTMLData(value)
)
}
const sendMail = (name, email, msg) => {
const transporter = nodemailer.createTransport({
sendmail: true,
newline: 'unix',
path: '/usr/sbin/sendmail'
})
transporter.sendMail(
{
from: email,
to: 'johndoe#mail.com',
subject: 'New Contact Form',
text: msg
}
)
}
app.post('/', (req, res) => {
const attributes = ['name', 'email', 'message']
const sanitizedAttributes = attributes.map(attr =>
validateAndSanitize(attr, req.body[attr])
)
const someInvalid = sanitizedAttributes.some(r => !r)
if (someInvalid) {
return res
.status(422)
.json({ error: 'Error : at least one fiel is invalid' })
}
sendMail(...sanitizedAttributes)
res.status(200).json({ message: 'OH YEAH' })
})
export default {
path: '/api/contact',
handler: app
}
Everything works as intended until the sendMail function where I end up with this error :
(node:10266) UnhandledPromiseRejectionWarning: Error: spawn /usr/sbin/sendmail ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:246:19)
at onErrorNT (internal/child_process.js:427:16)
at processTicksAndRejections (internal/process/next_tick.js:76:17)
(node:10266) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 6)
Any idea what Im doing wrong?

Answer 1

The error
Error: spawn /usr/sbin/sendmail ENOENT
suggests that nodemailer was looking for sendmail in /usr/sbin/ but haven't found it (this is the default location and can be configured in the path option of createTransport). First, make sure it doesn't exist (like AnFi has suggested) by running
ls -l /usr/sbin/sendmail
If you get
ls: cannot access '/usr/bin/sendmail': No such file or directory
then install sendmail by running
sudo apt-get install sendmail
Then, try ls -l /usr/sbin/sendmail and sending email again.