#StackBounty: #cron #sendmail sendmail Authorization failed in cron jobs

Bounty: 50

When I search for ‘cron’ in /var/sys/syslog I get some lines as follows:

Oct  2 11:10:02 hplaptop cron[141532]: sendmail: Authorization failed (534 5.7.9  https://support.google.com/mail/?p=InvalidSecondFactor d5sm1019803wrb.28 - gsmtp)
Oct  2 11:11:01 hplaptop cron[141579]: sendmail: Authorization failed (534 5.7.9  https://support.google.com/mail/?p=InvalidSecondFactor i11sm1042743wre.32 - gsmtp)
Oct  2 11:12:01 hplaptop cron[141623]: sendmail: Authorization failed (534 5.7.9  https://support.google.com/mail/?p=InvalidSecondFactor x2sm1028990wrl.13 - gsmtp)
Oct  2 11:13:02 hplaptop cron[141662]: sendmail: Authorization failed (534 5.7.9  https://support.google.com/mail/?p=InvalidSecondFactor f23sm1006111wmf.6 - gsmtp)

I’ve never used that program or a similar command to send emails. What do these error messages mean? is it a malware trying to send mail?


Get this bounty!!!

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