reading gmail is failing with IMAP

Question

I am running a cron job which executes the python script for reading gmail (2 min interval). I have used imaplib for reading the new mails. This was working fine until yesterday. Suddenly its throwing below error

imaplib.error: [AUTHENTICATIONFAILED] Invalid credentials (Failure)

and sometimes i am getting the below error

raise self.abort(bye[-1]) imaplib.abort: [UNAVAILABLE] Temporary System Error

When i run the same script on a different machine. Its working fine. I am assuming that the host has been blacklisted or something like that.

What are my options ?

I cant generate the Credentials (Gmail API) as this is under company domain account.

Answer 1

try with:

1) https://myaccount.google.com/lesssecureapps?pli=1

2) Gmail Settings -> Forwarding and POP / IMAP -> IMAP Acess to Enable IMAP

Answer 2

Some apps and devices use less secure sign-in technology. So we need to enable Less secure app access option from gmail account.

Steps:

1. Login into Gmail
2. Go to Google Account
3. Navigate to Security section
4. Turn on access for Less secure app access

By following above steps, issue will be resolved.