Possibly related to https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6751?

On 7/15/2013 6:15 AM, Mark Martinec wrote:
Malformed UTF-8 character (unexpected non-continuation byte 0x6e,
immediately after start byte 0xf6) in transliteration (tr///) at
/data/masscheckwork/weekly_mass_check/masses/../lib/Mail/SpamAssassin/DnsResolver.pm
line 627.

On a second thought, this should never have happened.

It indicates that something has flagged a string as a character string
(uft8 flag on) without checking its contents or using Encode::convert
to decode bytes to strings. This should be investigated, it is
not something that DNS resolver should try to work around,
such a string should never have been produced at all.

What version of Perl was that?
Was the setting normalize_charset turned on?

  Mark


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