DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sendgrid.info; h=content-transfer-encoding:content-type:from:mime-version:subject: x-feedback-id:to; s=smtpapi; bh=jCC0oQBCKfJ10bCI3PCG52Zwowyeh1haGJPACkWN9F4=; b=d5ir4d/9USuB47yrmdp+eCqSWwx31BeXWR6F7kWZLbaGVQ...
After completingpart 1andpart 2, we have a working Postfix SMTP server and Dovecot IMAP server. We can send and receive email using a desktop email client. Although I have created correctMX,AandPTRrecord, my emails were flagged as spam by Gmail and Outlook mail. So in this part, we are...