email-rfc3464-02.eml is a base64 encoded and should be detect as Domino

[azumakuniyuki]

The first part of https://github.com/sisimai/set-of-emails/blob/master/maildir/bsd/rfc3464-02.eml is a base64 encoded part:

--===============2022000000220202022==
Content-Type: multipart/report; report-type=delivery-status; boundary="==AAAAANEKONYAAN0000000"

--==AAAAANEKONYAAN0000000
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: base64

WW91ciBtZXNzYWdlCgogIFN1YmplY3Q6IE55YWFuCgp3YXMgbm90IGRlbGl2ZXJl
ZCB0bzoKCiAga2lqaXRvcmFAbmVrby5leGFtcGxlLmNvbQoKYmVjYXVzZToKCiAg
RXJyb3IgdHJhbnNmZXJyaW5nIHRvIG5la28yMi5leGFtcGxlLm9yZzsgTWF4aW11
bSBob3AgY291bnQgZXhjZWVkZWQuICBNZXNzYWdlIHByb2JhYmx5IGluIGEgcm91
dGluZyBsb29wLiAKCg==

Below is the decoded string of Base64 encoded string above

Your message

  Subject: Nyaan

was not delivered to:

  kijitora@neko.example.com

because:

  Error transferring to neko22.example.org; Maximum hop count exceeded.  Message probably in a routing loop.