Does anyone know how to solve "Too many login attempts" with smtp.gmail.com?

Mon Apr 18 17:03:15 IDT 2016

Hi ,

As of last night, I'm no longer able to use smtp.gmail.com.

I tried shutting all processes down and waiting for a few hours. I have
verified that use less secure apps is enabled.

I have no problem accessing the box using IMAP or usng the xmpp interface.

I assumed that maybe my problem was triggered by a faulty client (I'm using
KMail 4.14.10), so I tried to do a manual login which also failed (doing
base64 encode for use at gmail.com and password).

$openssl s_client -crlf -connect smtp.gmail.com:465
220 smtp.gmail.com ESMTP c187sm26581499wme.16 - gsmtp
EHLO c187sm26581499wme.16
250-smtp.gmail.com at your service, [93.184.216.34]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH2 PLAIN-CLIENTTOKEN OAUTHBEARER XOAUTH
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-CHUNKING
250 SMTPUTF8
AUTH LOGIN
334 VXNlcm5hbWU6
dXNlckBnbWFpbC5jb20K
334 UGFzc3dvcmQ6
c2VjcmV0cGFzc3dvcmR0aGF0d29ya3dpdGhJTUFQCg
454 4.7.0 Too many login attempts, please try again later.
c187sm26581499wme.16 - gsmtp
read:errno=0

Does anyone know how to solve this issue ?
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