I am ruing ubuntu 16.04 and i just installed chkrootkit and rkhunter after which i encountered this error every time i try to run an update in the terminal.------------------------------------------------------------Reading package lists... DoneBuilding dependency treeReading state information... Done0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.2 not fully installed or removed.After this operation, 0 B of additional disk space will be used.Setting up postfix (3.1.0-3) ...Postfix configuration was not changed. If you need to make changes, edit/etc/postfix/main.cf (and others) as needed. To view Postfix configurationvalues, see postconf(1).After modifying main.cf, be sure to r...
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