Smtp sending tracking issue

[MTRNord]

Known todos:

• Smtp sending should try tls #12
• Smtp sending doesn't exit if we get an error on the rcpt to commsnd #13
• Make sure we don't crash the job if only one of the servers didn't like our email.
• dmarc (This is more something for the web interface to generate. I added it to my test setup now)
• spf (This is more something for the web interface to generate. I added it to my test setup now)
• dkim (we dont verify it at this stage)
• Use STARTTLS when sending
• dane
• arc
• Notify the user about the messages' status, similar to how postfix does
• Fix parser: Failed to parse fetch arguments: "Parsing Error: VerboseError { errors: [(\" RFC822.HEADER FLAGS)\", Char(')')), (\"(UID RFC822.SIZE RFC822.HEADER FLAGS)\", Context(\"fetch_arguments\"))] }" request was (UID RFC822.SIZE RFC822.HEADER FLAGS) (Turns out we got deprecated requests)

And likely more...