Revert "Use distribution@thoth.pub both for sender and cc"

This reverts commit 37d01cf.

Author: rhigman

crossref_error_report.py

@@ -12,7 +12,8 @@
 # General constants
 DEFAULT_THOTH_API_URL = 'https://api.thoth.pub/graphql'
 DEFAULT_SMTP_PORT = 587
-EMAIL_SENDER = "Thoth Open Metadata <distribution@thoth.pub>"
+EMAIL_SENDER = "Thoth Open Metadata <info@thoth.pub>"
+EMAIL_CC = "distribution@thoth.pub"
 
 # Crossref-specific constants
 # TODO: replace with specific attachment filename, email subject and body based on Crossref feedback
@@ -235,7 +236,7 @@ def _send_report(self):
                 subject=CROSSREF_EMAIL_SUBJECT,
                 body=CROSSREF_EMAIL_BODY,
                 sender=EMAIL_SENDER,
-                cc=EMAIL_SENDER,
+                cc=EMAIL_CC,
                 attachment_path=self.csv_writer.csv_path
             )