Sending ebook to Kindle on iPhone from GMX email

[msoutopico]

Dear all,

I have created a gmx account to send ebooks from Calibre to my Kindle app on my iPhone, but when I test it, it says "Authentication credentials invalid". Here's the full log.

Traceback (most recent call last):
File "site-packages\calibre\gui2\wizard\send_email.py", line 209, in test_email_settings
File "site-packages\calibre\utils\smtp.py", line 170, in sendmail
File "site-packages\calibre\utils\smtplib.py", line 645, in login
SMTPAuthenticationError: (535, 'Authentication credentials invalid')

Log:
connect: (u'mail.gmx.com', 587)
connect: (u'mail.gmx.com', 587)
reply: '220 gmx.com (mrgmx102) Nemesis ESMTP Service ready\r\n'
reply: retcode (220); Msg: gmx.com (mrgmx102) Nemesis ESMTP Service ready
connect: gmx.com (mrgmx102) Nemesis ESMTP Service ready
send: 'ehlo Machine.domain.local\r\n'
reply: '250-gmx.com Hello Machine.domain.local [194.78.88.74]\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-AUTH LOGIN PLAIN\r\n'
reply: '250-SIZE 69920427\r\n'
reply: '250 STARTTLS\r\n'
reply: retcode (250); Msg: gmx.com Hello Machine.domain.local [194.78.88.74]
8BITMIME
AUTH LOGIN PLAIN
SIZE 69920427
STARTTLS
send: 'STARTTLS\r\n'
reply: '220 OK\r\n'
reply: retcode (220); Msg: OK
send: 'ehlo Machine.domain.local\r\n'
reply: '250-gmx.com Hello Machine.domain.local [194.78.88.74]\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-AUTH LOGIN PLAIN\r\n'
reply: '250 SIZE 69920427\r\n'
reply: retcode (250); Msg: gmx.com Hello Machine.domain.local [194.78.88.74]
8BITMIME
AUTH LOGIN PLAIN
SIZE 69920427
send: AUTH <censored>
reply: '535 Authentication credentials invalid\r\n'
reply: retcode (535); Msg: Authentication credentials invalid

The credentials work to access the gmx's mailbox, though.

I have added my new gmx email address

I have also tried with Gmail, but similar result.

I hope someone can help.

Cheers, Manuel

[msoutopico]

Hi there,

Nobody can help?

I haven't been able to fix this on my own, and without that feature Calibre is only half as useful...

I'll be grateful for any tips.

Cheers, Manuel

[kovidgoyal]

Remember to use your full email address as the username and also log into gmx once and turn on IMAP access. See https://manual.calibre-ebook.com/faq...-using-calibre

[msoutopico]

It worked! Thank you so much, Kovid!
Cheers, Manuel