[Bug 5867] New: [Support:2653] Spam Assassin does not block black-listed address

[bu...@bugzilla.spamassassin.org]

https://issues.apache.org/SpamAssassin/show_bug.cgi?id=5867

           Summary: [Support:2653] Spam Assassin does not block black-listed
                    address
           Product: Spamassassin
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: spamassassin
        AssignedTo: dev@spamassassin.apache.org
        ReportedBy: support@swsoft.co.jp


Created an attachment (id=4282)
 --> (https://issues.apache.org/SpamAssassin/attachment.cgi?id=4282)
Messages with full header

Under a condition, Spamassassin does not block black-listed E-mail address.

If "From name" contains the charactor "ー" (I hope the system can read it), it
happens.
The charactor is ISO-2022-JP's "213C" and "243C" as we checked, it seemed
SpamAssassin can not read it properly.

EUC-JP, UTF8 and SJIS does not have the problem.

For example,
SA did not block
From: =?ISO-2022-JP?B?GyRCITwbKEI=?= <ta...@test83.swjp>
SA did block 
From: =?ISO-2022-JP?B?GyRCJDsbKEI=?= <ta...@test83.swjp>

These test mails are from same address (which is saved on blacklist) but got
different name.


We have checked how it traced:

1) sa-ok.eml message body:

--------------
From: =?ISO-2022-JP?B?GyRCJDcbKEI=?= <ba...@address.jp>
To: example@example.jp
Subject: test

test
--------------

How it is traced:
--------------
# spamassassin -D -p ./user_prefs < sa-ok.eml
...
...
dbg: rules: running head tests; score so far=0
dbg: rules: compiled head tests
dbg: eval: all '*From' addrs: bad@address.jp
dbg: eval: all '*To' addrs: example@example.jp
...
dbg: rules: ran eval rule USER_IN_BLACKLIST ======> got hit (1)
...
--------------


2) sa-fail.eml message body:

--------------
From: =?ISO-2022-JP?B?GyRCITwbKEI=?= <ba...@address.jp>
To: example@example.jp
Subject: test

test
--------------

How it is traced:
--------------
# spamassassin -D -p ./user_prefs < sa-fail.eml
...
...
dbg: rules: running head tests; score so far=0
dbg: rules: compiled head tests
dbg: eval: all '*From' addrs: _(B <bad@address.jp
dbg: eval: all '*To' addrs: example@example.jp
...
--------------


As you can see in 2) case the From: address is parsed wrong by Spamassassin and
it parses it as "_(B <bad@address.jp". 

I attached the mail full header as "SA_bug_header.zip", it contains "SA_NG.eml"
and "SA_OK.eml" for Thunderbird.

It seems in case the sender name contained the paticular charactor,
SpamAssassin misunderstand the mail address, and as a result, the black list
can not work properly.


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