CentOS 8.x postfix rewrite sender address on outgoing email

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Replace only email address and not the sender name

If you want to replace only outgoing email address without changing the display name use following in /etc/postfix/main.cf:

  sender_canonical_maps = static:no-reply@<FQDN>


Replace both outgoing address and sender name

To replace outgoing (from) address on outgoing email with a desired display name use:

  1. Create file =/etc/postfix/header_checks= with following content:
    /^From:[[:space:]]+(.*)/ REPLACE From: "Your Name" <email@company.com>
  2. Configure postfix to use above configuration using:
    cd /etc/postfix
    postmap header_checks
    postconf -e 'smtp_header_checks = regexp:/etc/postfix/header_checks'
    service postfix reload


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