I am trying to use the Postmaster Mail Account service of  OTRS to fetch a mailbox but when i try to connect it with a Google Account it fails with the error Error Message: IMAPS: Can't connect to imap.gmail.com.  I also tried it with IMAPTLS but the error is still same.

I have checked all the security settings in GMail and make them enabled for less secure apps. I have also googled it but cannot find any clear information about it. 

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