contact receives the same email several times

Product Support
1

this is my cron jobs configuration

          • php /home/home/subdomain/app/console mautic:segments:update >/dev/null 2>&1
            */2 * * * * php /home/home/subdomain/app/console mautic:campaigns:rebuild >/dev/null 2>&1
            */10 * * * * php /home/home/subdomain/app/console mautic:campaigns:trigger >/dev/null 2>&1
            */15 * * * * php /home/home/subdomain/app/console mautic:emails:send >/dev/null 2>&1
            0 0 * * * php /home/home/subdomain/app/console mautic:email:fetch >/dev/null 2>&1
            0 0 * * * php /home/home/subdomain/app/console mautic:social:monitoring >/dev/null 2>&1
            0 0 1 * * php /home/home/subdomain/app/console mautic:iplookup:download >/dev/null 2>&1

I’m sending a scheduled campaign to send 1 email to contacts

the problem is that some contacts receive the same mail 2 or more times

I do not have duplicate contacts

already check with my smtp provider and everything is fine with them