Certificate renewal breaks if e-mail can't be delivered

[laurivosandi]

Example stack trace:

Mar 31 06:26:02 ca certidude[16379]: Connecing to ldap://dc1.example.com using Kerberos ticket cache from /run/certidude/krb5cc
Mar 31 06:26:02 ca /usr/bin/python[17271]: python /usr/local/bin/certidude serve -l 0.0.0.0 -p 80: GSSAPI client step 1
Mar 31 06:26:02 ca /usr/bin/python[17271]: python /usr/local/bin/certidude serve -l 0.0.0.0 -p 80: GSSAPI client step 1
Mar 31 06:26:02 ca /usr/bin/python[17271]: python /usr/local/bin/certidude serve -l 0.0.0.0 -p 80: GSSAPI client step 1
Mar 31 06:26:02 ca /usr/bin/python[17271]: python /usr/local/bin/certidude serve -l 0.0.0.0 -p 80: GSSAPI client step 2
Mar 31 06:26:02 ca certidude[16379]: Sending e-mail certificate-renewed.md to Lauri Võsandi <lauri@example.com>
Mar 31 06:26:03 ca certidude[16379]: Traceback (most recent call last):
Mar 31 06:26:03 ca certidude[16379]:   File "/usr/lib/python2.7/wsgiref/handlers.py", line 85, in run
Mar 31 06:26:03 ca certidude[16379]:     self.result = application(self.environ, self.start_response)
Mar 31 06:26:03 ca certidude[16379]:   File "/usr/local/lib/python2.7/dist-packages/falcon/api.py", line 209, in __call__
Mar 31 06:26:03 ca certidude[16379]:     responder(req, resp, **params)
Mar 31 06:26:03 ca certidude[16379]:   File "/root/certidude/certidude/auth.py", line 50, in kerberos_authenticate
Mar 31 06:26:03 ca certidude[16379]:     return func(resource, req, resp, *args, **kwargs)
Mar 31 06:26:03 ca certidude[16379]:   File "/root/certidude/certidude/firewall.py", line 24, in wrapped
Mar 31 06:26:03 ca certidude[16379]:     return func(self, req, resp, *args, **kwargs)
Mar 31 06:26:03 ca certidude[16379]:   File "/root/certidude/certidude/firewall.py", line 33, in wrapped
Mar 31 06:26:03 ca certidude[16379]:     return func(self, req, resp, *args, **kwargs)
Mar 31 06:26:03 ca certidude[16379]:   File "/root/certidude/certidude/api/request.py", line 100, in on_post
Mar 31 06:26:03 ca certidude[16379]:     _, resp.body = authority._sign(csr, body, overwrite=True)
Mar 31 06:26:03 ca certidude[16379]:   File "/root/certidude/certidude/authority.py", line 351, in _sign
Mar 31 06:26:03 ca certidude[16379]:     certificate=cert,
Mar 31 06:26:03 ca certidude[16379]:   File "/root/certidude/certidude/mailer.py", line 96, in send
Mar 31 06:26:03 ca certidude[16379]:     conn.sendmail(config.OUTBOX_MAIL, recipients, msg.as_string())
Mar 31 06:26:03 ca certidude[16379]:   File "/usr/lib/python2.7/smtplib.py", line 747, in sendmail
Mar 31 06:26:03 ca certidude[16379]:     raise SMTPRecipientsRefused(senderrs)
Mar 31 06:26:03 ca certidude[16379]: SMTPRecipientsRefused: {u'Lauri V\xf5sandi <lauri@example.com>': (451, '4.3.5 <lauri@example.com>: Recipient address rejected: Server configuration error')}
Mar 31 06:26:03 ca certidude[16379]: 192.168.12.1 - - [31/Mar/2017 06:26:03] "POST /api/request/?autosign=true&wait=30 HTTP/1.1" 500 59

[laurivosandi]

Fixed by submitting to local MTA, Postfix needs to be installed manually