Sending emails using loopback email connector - loopbackjs

Question

I am trying to use loopback-email-connector to send emails. I want to setup 2 email accounts. I am doing the following in datasources.json.
"emails": {
"name": "emails",
"connector": "mail",
"transports": [
{
"type": "smtp",
"host": "smtp.yandex.com",
"secure": true,
"port": 465,
"tls": {
"rejectUnauthorized": false
},
"auth": {
"user": "a1#abc.com",
"pass": "password"
}
},
{
"type": "smtp",
"host": "smtp.yandex.com",
"secure": true,
"port": 465,
"tls": {
"rejectUnauthorized": false
},
"auth": {
"user": "a2#abc.com",
"pass": "password"
}
}
]
}
In above case I have added 2 email accounts - a1#abc.com and a2#abc.com.
To send email, I am doing the following:
app.models.Email.send({
to: 'foo#bar.com',
from: 'a1#abc.com',
subject: 'my subject',
text: 'my text',
html: 'my <em>html</em>'
}, function(err, mail) {
console.log('email sent!');
cb(err);
});
This is successfully sending the email. But if I use from email as a2#abc.com, it doesn't work. I get the following error:
Error: Mail command failed: 553 5.7.1 Sender address rejected: not owned by auth user.
But if I move, a2#abc.com as the first email in datasources.json, it works.
In fact, which ever email comes first in the datasources.json only that works, the second one is not working. How can i setup multiple email ids in this case?

Answer 1

I was able to figure out a way which does not involve creating multiple datasources for each email.
Setting alias for each transport assigns an alias which can be used while sending emails. In respect to the above question, we can do something like below:
"emails": {
"name": "emails",
"connector": "mail",
"transports": [
{
"type": "smtp",
"host": "smtp.yandex.com",
"secure": true,
"port": 465,
"alias": "a1",
"tls": {
"rejectUnauthorized": false
},
"auth": {
"user": "a1#abc.com",
"pass": "password"
}
},
{
"type": "smtp",
"host": "smtp.yandex.com",
"secure": true,
"port": 465,
"alias": "a2",
"tls": {
"rejectUnauthorized": false
},
"auth": {
"user": "a2#abc.com",
"pass": "password"
}
}
]
}
After setting the alias as above, to send email, we can use the alias as transport.
app.models.Email.send({
to: 'foo#bar.com',
from: 'a1#abc.com',
subject: 'my subject',
text: 'my text',
html: 'my <em>html</em>',
transport: "a1"
}, function(err, mail) {
console.log('email sent!');
cb(err);
});
In the above example, I have set a1 alias and am sending email by setting transport as a1. This works fine.

Answer 2

The mail server is rejecting your email because you're trying to send a mail which is not same with your email option.
Just try to update a1#abc.com with your mail a2#abc.com like following:-
app.models.Email.send({
to: 'foo#bar.com',
from: 'a2#abc.com',
subject: 'my subject',
text: 'my text',
html: 'my <em>html</em>'
}, function(err, mail) {
console.log('email sent!');
cb(err);
});
You have to keep same email ids in your transports config and "from-to" email.

Answer 3

Please go through following steps:
1)Create 2 different datasource, with a different name and add single emailId to each. One datasource you have already made, from that just remove one emailId and attach to another one.
2)Create a new model(Ex. TestMail) by command lb model, set one datasource you want to attach with for sending mail.
3)Now you have two models, one Email and other TestMail, now just use send() with your required mail model.
This worked for me!