I've making a setup for a Debian 7 (wheezy) trying to follow strictly the guide in README.Exim4.Debian , but there are two things that I think lack to that file:

*1.* A problem seen in /var/log/exim4/mainlog: /failed to expand condition "${lookup{$local_part@$domain}lsearch{/var/lib/mailman/data/virtual-mailman}{1}{0}}" for mailman_router router: failed to open /var/lib/mailman/data/virtual-mailman for linear search: No such file or directory/

My solution: $ EximUser="$(sudo ps -A -o pid,ppid,pcpu,user,cmd | grep -ie 'exim' | grep -ve ' grep ' | cut -f 2 -d '.' | grep -ve '. root ' | cut -f 2 -d ' ' | head --lines=1)" $ sudo touch /var/lib/mailman/data/virtual-mailman $ sudo chown ${EximUser}:list /var/lib/mailman/data/virtual-mailman $ sudo chmod ug=rw,o=r /var/lib/mailman/data/virtual-mailman

*2.* Cannot create lists from web interface with the target domain: /Error: Unknown virtual host: lista.cnt.cat/

My solution: add the following 2 lines to /etc/mailman/mm_cfg.py , after POSTFIX_STYLE_VIRTUAL_DOMAINS declaration: for CurrentDomain in POSTFIX_STYLE_VIRTUAL_DOMAINS: add_virtualhost(CurrentDomain, CurrentDomain)