[exim-dev] [Bug 2224] New: DKIM: validation error: RSA_LONG_…

https://bugs.exim.org/show_bug.cgi?id=2224

            Bug ID: 2224
           Summary: DKIM: validation error: RSA_LONG_LINE
           Product: Exim
           Version: 4.90
          Hardware: x86
                OS: FreeBSD
            Status: NEW
          Severity: bug
          Priority: medium
         Component: DKIM
          Assignee: tom@???
          Reporter: gmn@???
                CC: exim-dev@???

Created attachment 1061
--> https://bugs.exim.org/attachment.cgi?id=1061&action=edit
message example

Hello.

Exim 4.90 (old 4.89 also have this bug) on FreeBSD 11.1.
Support for: iconv() use_setclassresources Perl Expand_dlfunc OpenSSL
Content_Scanning DKIM Experimental_SPF Experimental_SRS

acl_smtp_dkim is very simple.
check_dkim:
accept hosts = +relay_from_hosts : +my_external_nets
     control = dkim_disable_verify
accept

In transport is used signing messages for some domains.

Periodically i have paniclog (when accept message from this domain):
2018-01-15 08:39:11 1eayQI-000BmI-SH DKIM: signing failed: RSA_LONG_LINE

2018-01-15 08:39:10 1eayQI-000BmI-SH DKIM: validation error: RSA_LONG_LINE
2018-01-15 08:39:10 1eayQI-000BmI-SH DKIM: Error during validation, disabling
signature verification: RSA_LONG_LINE
2018-01-15 08:39:10 1eayQI-000BmI-SH <= no-reply@???
H=mail2.ua-tenders.com [77.120.121.47] P=esmtps S=75884
id=2d9c06c388e1c21467eacc7d785a7eaa@??? T="Компьютеры от
2018-01-15" from <no-reply@???> for ***

Exim accept message and send it to another MTA:
2018-01-15 08:39:11 1eayQI-000BmI-SH DKIM: signing failed: RSA_LONG_LINE

Accepted message don't have DKIM headers. See attachment.

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