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

See related CentOS 8.x postfix replace addresses on outgoing email

Refer:

• https://wiki.4psa.com/display/KB/How+to+change+the+From+header+for+messages+sent+by+Postfix

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