3524361 - BAD Invalid SASL Argument Error When Connecting to Google Mail Server

When deploying an iFlow containing a Mail Sender adapter, pointed to google mail server using OAuth2 authorization code authentication, the deployment fails with one of the following error messages - 

GBD1 BAD Invalid SASL argument

A1 BAD Invalid SASL argument

For example - 

[CAMEL][IFLOW][POLL_FAILED] : Polling from imaps://imap.gmail.com:993?binding=%23binding_MessageFlow_5&connectionTimeout=3000&delete=false&disconnect=true&fetchSize=20&folderName=OauthTest&handleFailedMessage=true&mail.imap.auth.digest-md5.disable=true&mail.imap.auth.login.disable=true&mail.imap.auth.ntlm.disable=true&mail.imap.auth.plain.disable=true&mail.imap.auth.xoauth2.disable=false&mail.imap.partialfetch=false&mail.imap.sasl.enable=false&mail.imaps.auth.mechanisms=XOAUTH2&mail.imaps.partialfetch=false&maxMessagesPerPoll=20&mimeDecodeHeaders=true&peek=true&pollStrategy=%23mailPollStrategy_MessageFlow_5&scheduler=MessageFlow_5.pollConsumerScheduler&scheduler.cron=0+0%2F1+0-23+%3F+*+*+*&scheduler.timeZone=Etc%2FGMT&unseen=true failed.
  [CAMEL][IFLOW][EXCEPTION] : javax.mail.MessagingException: GBD1 BAD Invalid SASL argument. h20mb27107218wmq
    [CAMEL][IFLOW][CAUSE] : Cause: com.sun.mail.iap.BadCommandException: GBD1 BAD Invalid SASL argument.

• SAP Cloud Integration
• SAP Integration Suite

CPI, HCI, Integration Suite, Cloud Integration, gmail, Google mail server, Unauthorized, GBD1 BAD Invalid SASL argument, A1 BAD Invalid SASL argument, Mail sender adapter, mail adapter, POLL_FAILED, poll, IMAP, OAuth2 Client Authorization Code, Inbox  , KBA , LOD-HCI-PI-CON-SOAP , SOAP Adapter , Problem