Can't send emails

[felixalguzman]

Hello I followed the guide in setting up my instance but i can't send emails. I tried the troubleshooting guide, and the only command that didn't work was swaks with @ gmail others are working fine. The error from swaks is:

<** 550-5.7.26 Unauthenticated email from servercheap.net is not accepted due to
<** 550-5.7.26 domain's DMARC policy. Please contact the administrator of
<** 550-5.7.26 servercheap.net domain if this was a legitimate mail. Please visit
<** 550-5.7.26  https://support.google.com/mail/answer/2451690 to learn about the
<** 550 5.7.26 DMARC initiative. el19-20020a056870f69300b0011f163e92e4si14347220oab.116 - gsmtp
 -> QUIT
<-  221 2.0.0 closing connection el19-20020a056870f69300b0011f163e92e4si14347220oab.116 - gsmtp
=== Connection closed with remote host.

This is when i tried sending the email directly from the container.

/code/shell.py in <module>
----> 1 send_email("[email protected]", "Test", "Body")

/code/app/email_utils.py in send_email(to_email, subject, plaintext, html, unsubscribe_link, unsubscribe_via_email)
    283     # add DKIM
    284     email_domain = SUPPORT_EMAIL[SUPPORT_EMAIL.find("@") + 1 :]
--> 285     add_dkim_signature(msg, email_domain)
    286
    287     msg_raw = to_bytes(msg)

/code/app/email_utils.py in add_dkim_signature(msg, email_domain)
    397             email_domain.encode(),
    398             DKIM_PRIVATE_KEY.encode(),
--> 399             include_headers=DKIM_HEADERS,
    400         )
    401         sig = sig.decode()

/usr/local/lib/python3.7/site-packages/dkim/__init__.py in sign(message, selector, domain, privkey, identity, canonicalize, signature_algorithm, include_headers, length, logger, linesep, tlsrpt)
   1333
   1334     d = DKIM(message,logger=logger,signature_algorithm=signature_algorithm,linesep=linesep,tlsrpt=tlsrpt)
-> 1335     return d.sign(selector, domain, privkey, identity=identity, canonicalize=canonicalize, include_headers=include_headers, length=length)
   1336
   1337

/usr/local/lib/python3.7/site-packages/dkim/__init__.py in sign(self, selector, domain, privkey, signature_algorithm, identity, canonicalize, include_headers, length)
    827             pk = parse_pem_private_key(privkey)
    828         except UnparsableKeyError as e:
--> 829             raise KeyFormatError(str(e))
    830     elif self.signature_algorithm == b'ed25519-sha256':
    831         try:

KeyFormatError: Unparsable private key: Unexpected tag (got 30, expecting 02)

[nguyenkims]

The first error comes from a DMARC check, I'd suggest to disable DMARC on your domain by removing the DNS record and re-run the swaks command.

The second error seems to due to a bug in the DKIM library SimpleLogin is using, you can find more info and the workaround in #1203