nodemailer: message queued but not sent - email

Question

I am working with nodemailer to send email using custom SMTP server.
let transporter = nodemailer.createTransport({
host: 'my.smtp.host',
port: 587,
secure: false,
auth: {
user: 'user',
pass: 'password',
},
debug: true,
logger: true
})
let info = await transporter.sendMail({
from: from,
to: to,
subject: subject,
text: content,
html: content,
cc: cc,
bcc: bcc,
})
Following is the result of sendMail.
{
accepted: [
'to#to.com'
],
rejected: [],
envelopeTime: 39,
messageTime: 49,
messageSize: 1730,
response: '250 2.0.0 Ok: queued as 5513B432BE6',
envelope: {
from: 'from#from.com',
to: [
'to#to.com'
]
},
messageId: '<274421c8-1abd-4973-dd8e-f57285b46a70#from.com>'
}
And following is log message.
...
[2021-06-09 19:00:21] INFO [StdWZWNkAto] <1730 bytes encoded mime message (source size 1693 bytes)>
[2021-06-09 19:00:21] DEBUG [StdWZWNkAto] S: 250 2.0.0 Ok: queued as 5513B432BE6
[2021-06-09 19:00:21] DEBUG [StdWZWNkAto] Closing connection to the server using "end"
I already tested this SMTP server with other tools and it works correctly.
What's wrong?
Please help me.

Answer 1

Well, this means that nodemailer successfully send the email and now it is in the queue of your custom SMTP server, so you have to deal with it. For instance, sendmail allows to see the queue via mailq command and resend via sendmail -q (or sendmail -q -v for more information). If you need more details, you should provide info about your SMTP server.