Package: dkimpy-milter
Version: 1.2.1-1~bpo10+1
Severity: normal
Tags: upstream
I tried sending a mail with "From: 😸@43-1.org", "To: 😸@43-1.org",
but dkimpy-milter didn't sign the message (it signs other mails) and
the following error appeared in the log:
+---
| dkimpy-milter[454]: DKIM: The From header field MUST be signed
+---
If I use "From: {us-ascii-only}@43-1.org", "To: 😸@43-1.org", then the
DKIM-Signature exists, but doesn't cover the "To" field:
+---
| DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=43-1.org;
| i=@43-1.org; q=dns/txt; s=2019; t=1598699673; h=subject : mime-version
| : content-type : content-transfer-encoding : message-id : from : date
| : from; bh=UjN96cC7omIGsgVag4PTJFDc2e+vxauhwCLS/rjCqvg=;
+---
It looks like dkimpy-milter silently discards header fields containing
Unicode when signing.
The same might happen when verifying mails (dkimpy-milter couldn't
verify a signature where the signed "To" field contained unicode,
while Spamassassin's DKIM check reported DKIM_VALID; not including the
header when verifying the signature might be a possible explaination).
Ansgar
-- System Information:
Debian Release: 10.5
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.7.0-0.bpo.2-cloud-amd64 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=C (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages dkimpy-milter depends on:
ii adduser 3.118
ii python3 3.7.3-1
ii python3-authres 1.2.0-1~bpo10+1
ii python3-dkim 1.0.3-1~bpo10+1
ii python3-dns 3.2.0-2
ii python3-dnspython 1.16.0-1
ii python3-milter 1.0.3-3
ii python3-nacl 1.3.0-2
ii python3-pkg-resources 40.8.0-1
dkimpy-milter recommends no packages.
Versions of packages dkimpy-milter suggests:
ii lsb-base 10.2019051400
ii postfix 3.4.14-0+deb10u1
-- Configuration Files:
/etc/dkimpy-milter.conf [Errno 2] No such file or directory:
'/etc/dkimpy-milter.conf'
/etc/dkimpy-milter/dkimpy-milter.conf changed [not included]
-- no debconf information
