• dns_nameservers
• dns_packet_max
• dns_retransmit_interval
• dns_testnames
• dns_timeout
• dns_v4_fallback
• dns_v4_first
• ecap_enable
• ecap_service
• email_err_data
• emulate_httpd_log
• err_html_text
• err_page_stylesheet
• error_default_language
• error_directory
• error_log_languages
• error_map
• esi_parser
• eui_lookup
• extension_methods
• external_acl_type
• external_refresh_check
• follow_x_forwarded_for
• force_request_body_continuation
• forward_log
• forward_max_tries