Hello, I am successfully using exim4u for some time. Thanks Gordon for your work! Now I installed exim4u 1.2.5 on another server with only relay-domains configured so far. From time to time I see the following error in /var/log/exim4/paniclog: 2011-02-15 22:20:42 XXXX malware acl condition: clamd: ClamAV returned /var/spool/exim4/scan/XXXX/XXXX.eml: Can't create temporary directory ERROR exim4u is running on Debian squeeze. I think I make all the necessary adoptions concerning paths and usernames/groups. I also added the clamav user to the Debian-exim group. clamd runs as clamav user: $ps axu | grep clamd clamav 15173 0.3 19.4 125480 102016 ? Ssl Feb13 21:54 /usr/sbin/clamd Interestingly it does not happen with all relayed mails, but only with a few. Do you have any hints where the problem might be? Best regards, Udo