Wide character in subroutine entry

[Steve Scotter]

Hi all,

Version Info
------------
# uname -a
FreeBSD maroon.spectrumcs.net 9.3-RELEASE-p13 FreeBSD 9.3-RELEASE-p13 #0: Tue Apr  7 03:01:12 UTC 2015
# perl -v
This is perl 5, version 20, subversion 2 (v5.20.2) built for amd64-freebsd-thread-multi
]# amavisd -V
amavisd-new-2.10.1 (20141025)
# postconf mail_version
mail_version = 2.11.5

I've been seeing this issue for a couple of months now and I thought upgrading perl from 5.18 to 5.20 would resolve it. However, I upgrading perl at the weekend and the issue still exists.

Every so often I get a message stuck in my postfix pre amavis queue, here are the logs of a example

---------

3mRR2L3Hfpz6lxM to=<recipient at example.com>, relay=amavis.example.com[127.0.0.2]:10040, delay=21443, delays=21441/0/0.01/2.6, dsn=4.5.0, status=deferred (host amavis.example.com[127.0.0.2] said: 451 4.5.0 Error in processing, id=77737-09, main_log_entry FAILED: Wide character in subroutine entry at /usr/local/sbin/amavisd line 3119. (in reply to end of DATA command))

3mRR2L3Hfpz6lxM from=<ConsumerAlerts???KidsLiveSafe at abeautyicon.com>, size=61290, nrcpt=1 (queue active)

---------

Doing a postcat on the mail files indicates the from address is 

From: "Consumer Alerts – Kids Live Safe" <ConsumerAlerts–KidsLiveSafe at abeautyicon.com>

However, looking at the message via Webmin's postfix queue module the from address is shown as...

From	"Consumer Alerts – Kids Live Safe" <ConsumerAlerts–KidsLiveSafe at abeautyicon.com>

---------

In all the instances I have seen the senders address has had question marks in it (when I looked via postqueue -p, hadn't look via postcat or webmin before today). Typically the message is a spam message do I just delete it from the postfix queue.

It looks to me as the though the issue us Unicode related so I'm concerned that eventually a legitimate message might get stuck in the queue due to the same problem. Is this fear unfounded? Are the messages only getting stuck because a spammers is trying something clever or could legitimate messages eventually start using these Unicode characters too?

Kind regards

Steve




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