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Article: 1098
From: Taylor, Grant
Date: 2006-08-14 17:06:57 -0400
Subject: Re: Milter-ClamC "450 4.7.1 anti-virus session write

Removal...........: milters-request@milter.info?subject=remove
More information..: http://www.milter.info/#Support
--------------------------------------------------------

Anthony Howe wrote:
> Possibly. Never thought of that. You try setting
> 
>     clamd-max-size
> 
> about 64KB smaller than clamd's max size and see if milter-clamc is more 
> graceful when it knows to limit message size. Note that because of how 
> the sendmail / milter passes date, clamd-max-size is convert into max. 
> number of 64KB chunks rounded up. So if you specify clamd-max-size=32, 
> it would actual do 64KB.


I have set the (old / depreciated) "-K" option to milter-clamc and things seem
to be ok.  However I'm still trying to track down where the limit that I'm running in to
is.  Below are some log entries from milter-clamc that may help.

I will be trying to locate and follow up with some ClamAV groups regarding this too as I
believe this is an inter operation with ClamAV.

(I have shortened the log entries significantly.  I think I have left any thing
pertinent.)

12:06:44 ... filterMail(806a488, 8069e60) MAIL='<user@client.tld>' auth=''
12:06:44 ... address='user@client.tld' localleft='user' localright='' domain='client.tld'
auth='(null)'
12:06:44 ... enter smfAccessPattern(8085168, user@client.tld, (null), 0)
12:06:44 ... exit  smfAccessPattern(8085168, user@client.tld, (null), 0) rc=95 action='(no
action)'
12:06:44 ... sender=<user@client.tld> access=? skipConnection=0 skipMessage=0
12:06:44 ... filterRcpt(806a488, 8069e60) RCPT='<gtaylor@riverviewtech.net>'
12:06:44 ... address='gtaylor@riverviewtech.net' localleft='gtaylor' localright=''
domain='riverviewtech.net'
12:06:44 ... enter smfAccessPattern(8085168, gtaylor@riverviewtech.net, (null), 0)
12:06:44 ... exit  smfAccessPattern(8085168, gtaylor@riverviewtech.net, (null), 0) rc=95
action='(no action)'
12:08:06 rti02 sm-mta[31125]: ... from=<user@client.tld>, size=13850986, class=0,
nrcpts=1, msgid=<44E09C19.2060205@client.tld>, proto=ESMTP, daemon=MTA,
relay=host.client.tld [64.195.0.172]
12:08:09 ... filterHeader(806a488, 'Received', 'from [172.30.25.3] (...')
12:08:09 ... > STREAM
12:08:09 ... < PORT 1743
12:08:09 ... filterHeader(806a488, 'Message-ID', '<44E09C19.2060205@do...')
12:08:09 ... filterHeader(806a488, 'Date', 'Mon, 14 Aug 2006 10:...')
12:08:09 ... filterHeader(806a488, 'From', 'First Last <user@do...')
12:08:09 ... filterHeader(806a488, 'User-Agent', 'Thunderbird 1.5.0.5 ...')
12:08:09 ... filterHeader(806a488, 'MIME-Version', '1.0...')
12:08:09 ... filterHeader(806a488, 'To', '"Taylor, Grant" <gta...')
12:08:09 ... filterHeader(806a488, 'Subject', 'Re: Test...')
12:08:09 ... filterHeader(806a488, 'References', '<44E099C2.1070705@do...')
12:08:09 ... filterHeader(806a488, 'In-Reply-To', '<44E09ADB.9010303@ri...')
12:08:09 ... filterHeader(806a488, 'Content-Type', 'multipart/mixed;  bo...')
12:08:09 ... filterHeader(806a488, 'X-Scanned-By', 'milter-spamc/0.25.32...')
12:08:09 ... filterHeader(806a488, 'X-Scanned-By', 'milter-link/0.1.8 (r...')
12:08:09 ... filterHeader(806a488, 'X-Scanned-By', 'milter-spiff/0.9.20 ...')
12:08:09 ... filterHeader(806a488, 'X-Scanned-By', 'milter-date/0.17.193...')
12:08:09 ... filterHeader(806a488, 'X-milter-date-PASS', 'YES...')
12:08:09 ... filterHeader(806a488, 'Received-SPF', 'None; receiver=rti02...')
12:08:09 ... filterHeader(806a488, 'Received-SPF', 'TempError (DNS name ...')
12:08:09 ... filterHeader(806a488, 'X-milter-link-Pass', 'YES...')
12:08:09 ... filterHeader(806a488, 'X-Spam-Flag', 'NO...')
12:08:09 ... filterHeader(806a488, 'X-Spam-Status', 'NO, hits=2.00 requir...')
12:08:09 ... filterHeader(806a488, 'X-Spam-Level', 'xx...')
12:08:09 ... filterEndHeaders(806a488)
12:08:09 ... filterBody(806a488, 'This is a multi-part...', 65535) maxChunks=0
chunksSent=0
12:08:09 ... filterBody(806a488, 'SzIPnR9zOhzvZ47O5tOY...', 65535) maxChunks=0
chunksSent=1
12:08:09 ... filterBody(806a488, 'u5V2Ghh3Gjv6zt8yL481...', 65535) maxChunks=0
chunksSent=2
12:08:09 ... filterBody(806a488, '2atMbZQ1YdmFAAJNM Mm...', 65535) maxChunks=0
chunksSent=3

<snip>

12:08:09 ... filterBody(806a488, 'Pgd9znRddDM LrrxOu7f...', 65535) maxChunks=0
chunksSent=161
12:08:09 ... filterBody(806a488, 't+LrLrK63d7yx2cVVj6X...', 65535) maxChunks=0
chunksSent=162
12:08:10 ... filterBody(806a488, 'sAEmlwX8ussjuKdF1jQR...', 65535) maxChunks=0
chunksSent=163
12:08:10 ... filterBody(806a488, 'nY3rvHr0sb12lW+vFu6D...', 65535) maxChunks=0
chunksSent=164
12:08:17 ... reply 450 4.7.1 anti-virus session write error
12:08:17 rti02 sm-mta[31125]: ... Milter: data, reject=450 4.7.1 anti-virus session write
error
12:08:17 rti02 sm-mta[31125]: ... to=<gtaylor@riverviewtech.net>, delay=00:01:33,
pri=13880986, stat=anti-virus session write error



Grant. . . .

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