Deferred due to greylisting

If the Greylisting filter is enabled, the message you are seeing is quite normal, and will be applied to all incoming mail that your server receives. Please see Greylisting – Version 64 Documentation – cPanel Documentation for full details.WHM Server wide settingsHome >> Email >> GreylistingIndividual cPanel Account settings (per domain)cPanel >> EMAIL >> Configure Greylisting

Configure VestaCP/Exim to send email using SendGrid

EXIM CONFIGURATIONVestaCP replaces exim.conf with its own version that allows it to properly route emails for VestaCP accounts, so it’s important to be careful when editing. Best practice is to backup exim.conf file before editing it CODE: SELECT ALL cp /etc/exim/exim.conf /etc/exim/exim.conf-bkup 1. Open Exim Configuration CODE: SELECT ALL nano /etc/exim/exim.conf 2. You must configure Exim to …

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error 451 exim mail server

Error : 451 local mail problem systemctl restart spamassassin systemctl restart clamd tail /var/log/exim/main.log just make  SPAMASSASSIN = yes SPAM_SCORE = 50 CLAMD =  yes in vi /etc/exim/exim.conf