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user to nod32mda agent, the parameter ‘command‘ dened in TRANSPORTS CONFIGURATION entry must by as follows:
command=/usr/bin/nod32mda-oMrvirus-scanned$local_part@$domain\
----user$local_part
resp. in case of RedHat Ready and Novell (SuSE) Ready variation of this anti-virus product used, the ’command’
parameter has to be dened as follows:
command=/opt/eset/nod32/bin/nod32mda-oMrvirus-scanned$local_part@$domain\
----user$local_part
4.3.4. Content ltering in MTA Exim 4
Let’s look inside the exim conguration le ’/etc/exim4/exim4.conf’ to become familiar with its content. It is typically
compound from TRANSPORTS CONFIGURATION section and ROUTERS CONFIGURATION section. In order to congure exim
to use our anti-virus as a content lter you have to dene special ROUTERS CONFIGURATION entry in a following way:
#ROUTERCONFIGURATION
nod32_router:
driver = accept
condition=“${ifeq{$received_protocol}{virus-scanned}{0}{1}}“
transport = nod32_transport
verify = false
Note that above entry has to be placed as a rst in the ROUTERS CONFIGURATION section. You have also dene
an appropriate TRANSPORTERS CONFIGURATION entry responsible for e-mail messages delivery to nod32mda agent.
Content of the entry is as follows:
#TRANSPORTSCONFIGURATION
nod32_transport:
driver = pipe
command=/usr/bin/nod32mda-oMrvirus-scanned$local_part@$domain
user=mailnull
group=mail
Note that in RedHat Ready and/or Novell (SuSE) Ready variation of this anti-virus product the absolute path to
nod32mda module is dierent, so the denition of TRANSPORTS CONFIGURATION entry in this case is as follows:
#TRANSPORTSCONFIGURATION
nod32_transport:
driver = pipe
command=/opt/eset/nod32/bin/nod32mda-oMrvirus-scanned$local_part@$domain
user=mailnull
group=mail
Make sure that the ‘user‘ (usually ‘mailnull‘) is the value of ’exim_user’ or pick a name fromthe list ’trusted_users’ for
this parameter. Also be sure that the option ’qualify_domain’ is undened or set to your fully qualied domain name.
With the above settings you have ensured that all the e-mail messages originally sent to local domain user will
be primarily catched by nod32mda module. Still there remains to provide that all messages processed by nod32mda
will be sent to the appropriate mailbox. To do so, just modify parameter ‘mda_path‘ within section [mda] of main
chapter 4 / Integration with E-mail Messaging System
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