Mail

RBLs

• mxtoolbox.com - RBL online check
• abuseat.org - RBL online check
• senderbase.org - CISCO RBL online check
• ers.trendmicro.com - Trendmicro reputation online check
• ipremoval.sms.symantec.com
  • Symantec online check

Misc

• Dovecot - Dump Config

  doveconf -n
  

• Dovecot - List Mailbox Dirs

  doveadm mailbox list -u <email>
  

• Dovecot - Configure Shared Mailboxes

• Dovecot - Debug Shared Mailboxes Issues

• Dovecot IMAP - Check ACL

  doveadm acl debug -u <email>
  

• Postfix - Drop Mails

  postsuper -d ALL
  postsuper -d ALL deferred
  

• Postfix - OpenDKIM Setup on Ubuntu

• Postfix - SPF Setup on Ubuntu

• Microsoft SPF Record Tool: SPF Record wizard