I have a similar problem with the upgrade. I can't email the books to my Kindle Paperwhite any longer. Get this message:
calibre, version 2.57.1 (win32, embedded-python: True)
Failed to email book: Failed: Email Forcing Gravity to
abcdef@kindle.com
Starting job: Email Forcing Gravity to
abcdef@kindle.com
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 116, in sendmail
File "site-packages\calibre\utils\smtp.py", line 108, in sendmail_direct
IOError: Failed to send mail: error(10013, 'An attempt was made to access a socket in a way forbidden by its access permissions')
Retrying in 1 seconds...
Waiting 1 seconds before sending, to avoid being marked as spam.
You can control this delay via Preferences->Tweaks
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 116, in sendmail
File "site-packages\calibre\utils\smtp.py", line 108, in sendmail_direct
IOError: Failed to send mail: error(10013, 'An attempt was made to access a socket in a way forbidden by its access permissions')
Job: "Email Forcing Gravity to
abcdef@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__
IOError: Failed to send mail: error(10013, 'An attempt was made to access a socket in a way forbidden by its access permissions')
Called with args: (u'C:\\Users\\JimRe\\AppData\\Local\\Temp\\calibre _qoivf7\\q3zfg4caltmpfmt.mobi', u'Forcing Gravity - Alexander, Monica.mobi', u'abcdef@kindle.com', u'E-book: Forcing Gravity', u'Attached, you will find the e-book\n\nForcing Gravity\n\tby Alexander, Monica\n\nin the MOBI format.') {u'log': <calibre.utils.logging.GUILog object at 0x0B06B5B0>, u'notifications': <Queue.Queue instance at 0x07AF3058>, u'abort': <threading._Event object at 0x0B06B950>}
Don't know why because it used to work perfectly. Any help would be appreciated. I'm running on Windows 10, with Calibre 2.57.1 (64 bit).