Can't send epubs from Calibre to Papewhite :SMTPAuthenticationError: (535, 'Authentic

[hdhwolfe]

Hi! New to this forum, but not to Calibre-

I am receiving the following error message when I attempt to send an epub to my Kindle Paperwhite. I have never had this problem before. Unfortunately, I am not so techie that I understand what it means! Sorry! Looks and sounds like a foreign language to me!

Here is the message I get on Calibre when I attempt to send an ebook:
SMTPAuthenticationError: (535, 'Authentication credentials invalid')

Spoiler:

Starting job: Email Bossman to hdhwolfe3@kindle.com
connect: (u'mail.gmx.com', 587)
connect: (u'mail.gmx.com', 587)
reply: '220 gmx.com (mrgmx003) Nemesis ESMTP Service ready\r\n'
reply: retcode (220); Msg: gmx.com (mrgmx003) Nemesis ESMTP Service ready
connect: gmx.com (mrgmx003) Nemesis ESMTP Service ready
send: 'ehlo [192.168.0.7]\r\n'
reply: '250-gmx.com Hello [192.168.0.7] [74.128.218.30]\r\n'
reply: '250-SIZE 69920427\r\n'
reply: '250-AUTH LOGIN PLAIN\r\n'
reply: '250 STARTTLS\r\n'
reply: retcode (250); Msg: gmx.com Hello [192.168.0.7] [74.128.218.30]
SIZE 69920427
AUTH LOGIN PLAIN
STARTTLS
send: 'STARTTLS\r\n'
reply: '220 OK\r\n'
reply: retcode (220); Msg: OK
send: 'ehlo [192.168.0.7]\r\n'
reply: '250-gmx.com Hello [192.168.0.7] [74.128.218.30]\r\n'
reply: '250-SIZE 69920427\r\n'
reply: '250 AUTH LOGIN PLAIN\r\n'
reply: retcode (250); Msg: gmx.com Hello [192.168.0.7] [74.128.218.30]
SIZE 69920427
AUTH LOGIN PLAIN
send: AUTH
reply: '535 Authentication credentials invalid\r\n'
reply: retcode (535); Msg: Authentication credentials invalid

Sending failed...

Traceback (most recent call last):
File "site-packages\calibre\gui2\email.py", line 43, in run
File "site-packages\calibre\gui2\email.py", line 130, in sendmail
File "site-packages\calibre\utils\smtp.py", line 135, in sendmail
File "site-packages\calibre\utils\smtplib.py", line 636, in login
SMTPAuthenticationError: (535, 'Authentication credentials invalid')


Retrying in 301 seconds...

Waiting 301 seconds before sending, to avoid being marked as spam.
You can control this delay via Preferences->Tweaks
connect: (u'mail.gmx.com', 587)
connect: (u'mail.gmx.com', 587)
reply: '220 gmx.com (mrgmx002) Nemesis ESMTP Service ready\r\n'
reply: retcode (220); Msg: gmx.com (mrgmx002) Nemesis ESMTP Service ready
connect: gmx.com (mrgmx002) Nemesis ESMTP Service ready
send: 'ehlo [192.168.0.7]\r\n'
reply: '250-gmx.com Hello [192.168.0.7] [74.128.218.30]\r\n'
reply: '250-SIZE 69920427\r\n'
reply: '250-AUTH LOGIN PLAIN\r\n'
reply: '250 STARTTLS\r\n'
reply: retcode (250); Msg: gmx.com Hello [192.168.0.7] [74.128.218.30]
SIZE 69920427
AUTH LOGIN PLAIN
STARTTLS
send: 'STARTTLS\r\n'
reply: '220 OK\r\n'
reply: retcode (220); Msg: OK
send: 'ehlo [192.168.0.7]\r\n'
reply: '250-gmx.com Hello [192.168.0.7] [74.128.218.30]\r\n'
reply: '250-SIZE 69920427\r\n'
reply: '250 AUTH LOGIN PLAIN\r\n'
reply: retcode (250); Msg: gmx.com Hello [192.168.0.7] [74.128.218.30]
SIZE 69920427
AUTH LOGIN PLAIN
send: AUTH
reply: '535 Authentication credentials invalid\r\n'
reply: retcode (535); Msg: Authentication credentials invalid

Sending failed...

Traceback (most recent call last):
File "site-packages\calibre\gui2\email.py", line 43, in run
File "site-packages\calibre\gui2\email.py", line 130, in sendmail
File "site-packages\calibre\utils\smtp.py", line 135, in sendmail
File "site-packages\calibre\utils\smtplib.py", line 636, in login
SMTPAuthenticationError: (535, 'Authentication credentials invalid')

Job: "Email Bossman to hdhwolfe3@kindle.com" failed with error:
Traceback (most recent call last):
File "site-packages\calibre\gui2\threaded_jobs.py", line 83, in start_work
File "site-packages\calibre\gui2\email.py", line 98, in __call__
SMTPAuthenticationError: (535, 'Authentication credentials invalid')

Called with args: (u'C:\\Users\\TOBYAN~1\\AppData\\Local\\Temp\\cali bre_8jth9w\\1wiwkicaltmpfmt.mobi', u'Bossman - Vi Keeland.mobi', u'hdhwolfe3@kindle.com', u'E-book: Bossman', u'Attached, you will find the e-book\n\nBossman\n\tby Vi Keeland\n\nin the MOBI format.') {u'abort': , u'notifications': , u'log': }

Anyone?!
Thanks!!!

[eschwartz]

It is claiming that the username/password you are using for your GMX email account is incorrect.

[hdhwolfe]

Thanks! I had missed a spot where I was supposed to put in my user name. Your answer directed me there! Thanks again so much! It works!

[eschwartz]

Happy to help.