Hello,
I am really sorry, I just rebuilt exim conf and noticed the same error. On further investigation, I learned that exim only allows few filtering commands in filter rule. So using for loop in filter file won't work. But I just created a script as a work around.
Create filter file in folder : /usr/local/cpanel/etc/exim/sysfilter/options/ with one domain in it as follows.
Code:
if ("$h_to:, $h_cc:" contains "@domain.com")
then
fail text "Emails to this domain/mail address is temporarily blocked by the Administrator"
seen finish
endif
if not first_delivery
then
finish
endif
Then create a file with list of rest of the domains/mail addresses that you want to block. Once created, run below script to add all the domains/email addresses from the file to custom filter.
Code:
for i in `cat /root/block_list.txt` ; do for j in `grep -n "contains" /usr/local/cpanel/etc/exim/sysfilter/options/filter_file | cut -d: -f1 | tail -1` ; do let "j++" ; sed -i "$(echo $j)i $(echo 'or ("$h_to:, $h_cc:" contains "'$i'")')" /usr/local/cpanel/etc/exim/sysfilter/options/filter_file ; done ; done
If you are adding domains/email addresses later, you can use below script for checking and removing duplicates from block list before adding them to filter file. The script will display duplicate domains/email addresses if any found.
Code:
for i in `cat /root/block_list.txt` ; do grep $i /usr/local/cpanel/etc/exim/sysfilter/options/filter_file > /tmp/new ; if [ $? = 0 ] ; then echo -e "\n\nFile contains duplicates :" ; cut -d'"' -f4 /tmp/new ; sed -i.bak "/${i}/d" /root/block_list.txt ; fi ; done
I hope this will help.
Notes :
1) If a mail contains any of the domains/mail addresses added in filter file in "To" or "Cc" fields, the mail will be blocked and won't be delivered to any of the recipients.
2) The second script will remove domain.com from block list file, if
[email protected] found in filter file. But it will take a backup of the file as "block_list.bak" before removing lines from the file. So check for the duplicate domain/email address displayed after running the script.
3) Make sure to replace "/usr/local/cpanel/etc/exim/sysfilter/options/filter_file" (custom filter file) and "/root/block_list.txt" (list of domains/mail addresses to be blocked) in scripts with your file names.
