421 4.3.0 deliver: Trying to unput wrong character

[Ken Murchison]

What is the Content-Transfer-Encoding of the email?  Was the message 
Base64 encoded, or is the PNG included as raw binary data?



On 07/24/2017 01:19 AM, Mikhail T. wrote:
>
> My procmail is configured to feed incoming mail into deliver:
>
>     :0wr
>     |sed 1d | /opt/cyrus/bin/deliver mi
>
> Recently I received an e-mail consisting of a PNG-file -- not an 
> attachment, the body of the e-mail had content-type image/png. That 
> message ended up in my /var/mail/mi mailbox -- because deliver would 
> not accept it:
>
>     421 4.3.0 deliver: Trying to unput wrong character
>
> Trying to upload the same message using mbox2imap, I get:
>
>     mbox2imap: (alert) IMAP protocol error
>     mbox2imap: (alert) Protocol response: NO
>     mbox2imap: (alert) Diagnostic message: ['Message contains NUL
>     characters']
>
> Why is deliver saying this, and what can I do to be able to receive 
> such mail through Cyrus the way I was able to receive them through 
> regular Unix mail for years? Thank you!
>
>     -mi
>
>
>
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-- 
Kenneth Murchison
Cyrus Development Team
FastMail Pty Ltd

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