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Viewing file:     opt_smtpd_sender_restrictions.html (1.9 KB)      -rw-r--r--

The default is to permit any sender address. The following restrictions are available:

• permit_mynetworks: permit if the client address matches $mynetworks.
• reject_unknown_client: reject the request if the client hostname is unknown.
• reject_maps_rbl: reject if the client is listed under $maps_rbl_domains.
• reject_invalid_hostname: reject HELO hostname with bad syntax.
• reject_unknown_hostname: reject HELO hostname without DNS A or MX record.
• reject_unknown_sender_domain: reject sender domain without A or MX record.
• check_sender_access maptype:mapname: look up sender address, parent domain, or localpart@. Reject if result is REJECT or "[45]xx text" Permit otherwise.
• check_client_access maptype:mapname: see smtpd_client_restrictions.
• check_helo_access maptype:mapname: see smtpd_helo_restrictions.
• reject_non_fqdn_hostname: reject HELO hostname that is not in FQDN form
• reject_non_fqdn_sender: reject sender address that is not in FQDN form
• reject: reject the request. Place this at the end of a restriction.
• permit: permit the request. Place this at the end of a restriction.

Specify a list of restrictions, separated by commas and/or whitespace. Continue long lines by starting the next line with whitespace.