Script DNSHealth Can't send email

nbctcp · Mon Nov 22, 2021 2:38 am

PROBLEM
OS 7.1rc6
1. when I run the script nothing coming to my email.
mikrotik log didn't show any mail log
Where my mistake?
tq

STEPS TAKEN
1. test manual email
/tool e-mail set address=[:resolve smtp.gmail.com] from=user@gmail.com password
="-user" port=587 user=user@gmail.com tls=starttls
/tool e-mail send to=user@gmail.com subject="test" body="test"
I can receive the email

SCRIPT
https://github.com/arkashiks/dns_health ... hcheck.rsc

:local sysname [/system identity get name];
:local EMAIL "user@gmail.com";
:local PrimaryDNS "192.168.88.250";
:local BackupDNS "192.168.100.1";
:local TestDomain "mikrotik.com";
:local ConfiguredDNS [/ip dns get servers];
###### when router is in its primary configuration
:if ($PrimaryDNS = $ConfiguredDNS) do={
    :do { 
        ###### test resolution
        :put [:resolve $TestDomain server $ConfiguredDNS];
        ###### generate syslog messages
        /log info "Primary DNS $PrimaryDNS healthcheck completed, no issues";
    } on-error={ 
        :put "resolver failed"; 
        ###### generate syslog messages
        /log info "name resolution using primary DNS $PrimaryDNS failed";
        /log info "temporary setting backup DNS $BackupDNS as primary";
        ###### update DNS with backup DNS
        /ip dns set servers=$BackupDNS; 
        ###### send notification email
        /tool e-mail send to="$EMAIL" subject="$sysname script notification: Primary DNS $PrimaryDNS down" body="Primary DNS $PrimaryDNS is down.\r\nDNS configuration changed to backup DNS $BackupDNS."
        /log info "notification email to $EMAIL sent";
    }
}
###### when router is in its backup configuration
:if ($BackupDNS = $ConfiguredDNS) do={
    :do { 
        ###### test resolution
        :put [:resolve $TestDomain server $PrimaryDNS]
        ###### generate syslog messages
        /log info "name resolution using primary DNS $PrimaryDNS working now";
        /log info "restoring original DNS configuration";
        ###### revert back DNS configuration to original
        /ip dns set servers=$PrimaryDNS;
        ###### send notification email
        /tool e-mail send to="$EMAIL" subject="$sysname script notification: Primary DNS $PrimaryDNS up" body="Primary DNS $PrimaryDNS is up.\r\nOriginal DNS configuration restored."
        /log info "notification email to $EMAIL sent";        
    } on-error={ 
        :put "resolver failed";
        ###### generate syslog messages
        /log info "system is configured with backup DNS $BackupDNS";
        /log info "Primary DNS $PrimaryDNS is still down, next check in 300 seconds";
    }
}

Jotne · Mon Nov 22, 2021 8:56 am

Do always use code tag button above post for posting codes.

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This script will only send email when DNS has changed, so if no change, no DNS.

Try change:

 /tool e-mail send to="$Email" subject="$sysname script notification: Primary DNS $PrimaryDNS down" body="Primary DNS $PrimaryDNS is down.\r\nDNS configuration changed to backup DNS $BackupDNS."

to:

:put "Primary DNS $PrimaryDNS is down."

Change this:

:local TestDomain "mikrotik.com"

to some that does not work (to force change), eks:

:local TestDomain "xxxyyy333.com"

Wrap the whole script in extra curly brackets. {<script>}, then cut and past it to terminal.
If script then show message "Primary DNS $PrimaryDNS is down.", you know script does work.
Change DNS back to original, replay put line with /tools e-mail and test again.

Script DNSHealth Can't send email

Script DNSHealth Can't send email

Re: Script DNSHealth Can't send email

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