Postfix - zrezavanie mailov

Dobrý deň,

mám taký divný problém. Jednému užívateľovi chodia niekedy nekompletne maily. Proste v polovici alebo na začiatku ten mail zreže a nepokračuje ďalej. Tento mail je orezany uz na serveri. Pritom v logoch servera cez ktory sa nam relayuje pošta je mail v plnej veľkosti. V lokalnych logoch nie je nic podozrive:

Aug 20 11:40:24 rt1-router postfix/smtpd[29038]: connect from mailxxxxxx
Aug 20 11:40:24 rt1-router postfix/smtpd[29038]: A8C2617FF5: client=mailxxxxxxxxx
Aug 20 11:40:24 rt1-router postfix/cleanup[29041]: A8C2617FF5: message-id=<4A8D1C15.4080606@roedl.sk>
Aug 20 11:40:25 rt1-router postfix/qmgr[10763]: A8C2617FF5: from=<xxxx>, size=53086, nrcpt=1 (queue active)
Aug 20 11:40:25 rt1-router postfix/pipe[29042]: A8C2617FF5: to=<yyyy>, relay=dfilt, delay=0.51, delays=0.47/0/0/0.03, dsn=2.0.0, status=sent (delivered via dfilt service)
Aug 20 11:40:25 rt1-router postfix/qmgr[10763]: A8C2617FF5: removed
Aug 20 11:40:25 rt1-router postfix/pickup[27163]: 2904817FF5: uid=108 from=<XXXXXX>
Aug 20 11:40:25 rt1-router postfix/cleanup[29287]: 2904817FF5: message-id=<4A8D1C15.4080606@roedl.sk>
Aug 20 11:40:25 rt1-router postfix/qmgr[10763]: 2904817FF5: from=<XXXX>, size=3326, nrcpt=1 (queue active)
Aug 20 11:40:25 rt1-router clamsmtpd: 1073DD: accepted connection from: 127.0.0.1
Aug 20 11:40:25 rt1-router postfix/smtpd[29055]: connect from localhost[127.0.0.1]
Aug 20 11:40:25 rt1-router postfix/smtpd[29038]: disconnect from mailXxxxxxxx]
Aug 20 11:40:25 rt1-router postfix/smtpd[29055]: 3406E17FF9: client=localhost[127.0.0.1]
Aug 20 11:40:25 rt1-router postfix/cleanup[29041]: 3406E17FF9: message-id=<4A8D1C15.4080606@roedl.sk>
Aug 20 11:40:25 rt1-router postfix/qmgr[10763]: 3406E17FF9: from=<xxxxxxx>, size=3593, nrcpt=1 (queue active)
Aug 20 11:40:25 rt1-router clamsmtpd: 1073DD: from=xxxxxxxxxxxx, to=xxxxxxxxxxxxx, status=CLEAN
Aug 20 11:40:25 rt1-router postfix/smtp[29053]: 2904817FF5: to=<xxxxxx>, relay=127.0.0.1[127.0.0.1]:10025, delay=0.11, delays=0.02/0/004/0.05, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 3406E17FF9)
Aug 20 11:40:25 rt1-router postfix/qmgr[10763]: 2904817FF5: removed
Aug 20 11:40:25 rt1-router postfix/local[29564]: 3406E17FF9: to=<xxxxx>, orig_to=<xxxxxx>, relay=local, delay=0.05/0/0/0, dsn=2.0.0, status=sent (delivered to maildir)
Aug 20 11:40:25 rt1-router postfix/qmgr[10763]: 3406E17FF9: removed
Aug 20 11:40:25 rt1-router postfix/smtpd[29055]: disconnect from localhost[127.0.0.1]
Aug 20 11:40:29 rt1-router pop3d: Connection, ip=[::ffff:10.224.34.67]

Vôbec nemám tušenie čo to može byť, môže také niečo robiť clamav resp. clamsmtp? v konfigurákoch nie je nič zaujímave ale preistotu som ich priložil. Robí to iba jednému užívateľovi - ked je ako príjemca alebo aj v kópii (popr. si to za dva mesiace nikto iný nevšimol :) ) a robí to práve konateľovi :/ ach

Ďakujem pekne za každú radu

postfix: 2.5.5
os: debian lenny 5.0.2, 2.6.18-4-686 #1 SMP Mon Mar 26 17:17:36 UTC 2007 i686 GNU/Linux