Odd atachment blocking issue
richard.coombe at taffhousing.co.uk
Thu Jul 26 10:00:41 IST 2012
Got an issue whereby if Sender1 sends a mail with attachment to Recipient1 the attachment is blocked, with the message:
This is a message from the MailScanner E-Mail Virus Protection Service
The original e-mail attachment "winmail.dat"
was believed to be infected by a virus and has been replaced by this warning
If you wish to receive a copy of the *infected* attachment, please
e-mail helpdesk and include the whole of this message
in your request. Alternatively, you can call them, with
the contents of this message to hand when you call.
At Thu Jul 19 09:50:02 2012 the virus scanner said:
Could not parse Outlook Rich Text attachment
Note to Help Desk: Look on the Taff () MailScanner in /var/spool/MailScanner/quarantine/20120719 (message AC4EA81B55.A3BA3).
But the message is CCed to Recipient2 and the attachment gets through. This behaviour is consistent when Sender1 sends emails to Recipient1 and then forwards the failed message or CCs to Recipient2.
The blocked attachment in is showing up as MIME Type: application/ms-tnef but on the CC'd the email it's MIME Type: application/vnd.ms-excel
Any thoughts on where to start looking for problems? I can sort of see what's happening but I can't figure out why the behaviour is different from one recipient to the next.
Mailscanner - 4.74.16 (yeah yeah, I know, but I'm using Ubuntu packages)
Postfix - 2.8.5-2~build0.10.04
TNEF - 1.4.9
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307-315 Cowbridge Road East
Ffon Phone 02920259182
Ffacs Fax 02920259199
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