Sending book to kindle via email

[dancer373]

Can someone please help explain what's causing the error below? I've been having trouble with this and have created a GMX email to try to resolve the problem.

Sending failed...

Traceback (most recent call last):
File "site-packages/calibre/gui2/email.py", line 44, in run
File "site-packages/calibre/gui2/email.py", line 134, in sendmail
File "site-packages/calibre/utils/smtp.py", line 147, in sendmail
File "site-packages/calibre/utils/smtplib.py", line 334, in connect
File "site-packages/calibre/utils/smtplib.py", line 309, in _get_socket
File "lib/python2.7/socket.py", line 557, in create_connection
gaierror: [Errno 8] nodename nor servname provided, or not known

Job: "Email Rich People Problems to [email address]" failed with error:
Traceback (most recent call last):
File "site-packages/calibre/gui2/threaded_jobs.py", line 84, in start_work
File "site-packages/calibre/gui2/email.py", line 101, in __call__
gaierror: [Errno 8] nodename nor servname provided, or not known

Called with args: (u'/var/folders/rf/ps57gz7n6yx1pr0lk32lpk7w0000gn/C/calibre_3.22.1_tmp_npx4Nh/vqF6bGcaltmpfmt.mobi', u'Rich People Problems - Kevin Kwan.mobi', u'[email address]', u'E-book: Rich People Problems', u'Attached, you will find the e-book\n\nRich People Problems\n\tby Kevin Kwan\n\nin the MOBI format.') {u'abort': <threading._Event object at 0x10d272e10>, u'log': <calibre.utils.logging.GUILog object at 0x10d272ad0>, u'notifications': <Queue.Queue instance at 0x11c0a8560>}

[kovidgoyal]

Just google the last line of the error message and you should get plenty of suggestions, for example: https://stackoverflow.com/questions/...with-macos-sie