G Suite migration using dsync

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G Suite migration using dsync

Dovecot mailing list
Hello,

I am trying to migrate a domain from G Suite using dsync and am not
clear on how to configure so I am getting failures.

This is the configuration in dovecot.conf:

imapc_host = imap.gmail.com
imapc_port = 993
imapc_password = 1234
imapc_ssl = imaps
imapc_ssl_verify = yes
imapc_features = gmail-migration

I also tried with imapc_ssl_verify commented.

For simplicity, both the username and password are the same for G Suite
and Dovecot and are verified to access the G Suite account with other tools.

Here is the command (from the wiki) and output:

# doveadm backup -a 'virtual/All' -O '-$GmailHaveLabels' -R -u
[hidden email] imapc:
dsync([hidden email]): Info: imapc(imap.gmail.com:993): Connected to
2607:f8b0:4003:c0f::6c:993 (local IPv6:port)
dsync([hidden email]): Warning: imapc(imap.gmail.com:993): Server
disconnected unexpectedly: SSL_connect() failed: error:14094410:SSL
routines:ssl3_read_bytes:sslv3 alert handshake failure: SSL alert number
40 - reconnecting (delay 0 ms)
dsync([hidden email]): Info: imapc(imap.gmail.com:993): Connected to
74.125.30.109:993 (local IPv4:port)
dsync([hidden email]): Error: imapc(imap.gmail.com:993): Server
disconnected unexpectedly: SSL_connect() failed: error:14094410:SSL
routines:ssl3_read_bytes:sslv3 alert handshake failure: SSL alert number
40 - disconnecting
dsync([hidden email]): Error: User initialization failed: imapc: Login
to imap.gmail.com failed: Disconnected from server

In reading through the wiki, it seems I am missing something, but I
can't figure out what is missing and internet searches don't provide
further useful information on the dovecot tools.

Thank you,

Paul