{"id":10445,"date":"2023-05-03T10:28:11","date_gmt":"2023-05-03T10:28:11","guid":{"rendered":"https:\/\/www.scmgalaxy.com\/tutorials\/?p=10445"},"modified":"2023-06-19T13:29:30","modified_gmt":"2023-06-19T13:29:30","slug":"top-50-postfix-interview-questions-with-answers","status":"publish","type":"post","link":"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-postfix-interview-questions-with-answers\/","title":{"rendered":"Top 50 Postfix Interview Questions with Answers"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-103-1024x576.png\" alt=\"\" class=\"wp-image-10446\" width=\"743\" height=\"417\" srcset=\"https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-103-1024x576.png 1024w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-103-300x169.png 300w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-103-768x432.png 768w, https:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2023\/05\/image-103.png 1200w\" sizes=\"auto, (max-width: 743px) 100vw, 743px\" \/><figcaption class=\"wp-element-caption\"><strong><em>Postfix Interview Questions with Answers<\/em><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\">1) Which of the following is the correct syntax for postfix&#8217;s main configuration file?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) \/etc\/postfix\/mainconfig.cf<br>b) \/etc\/postfix\/main.cf<br>c) \/etc\/postfix\/config.cf<br>d) \/etc\/config\/postfix.cf<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) \/etc\/postfix\/main.cf<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">2) Which of the following applications is responsible for delivering mail in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd<br>b) postfixd<br>c) maild<br>d) sendmail<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) smtpd<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">3) Which of the following commands can be used to restart postfix without stopping mail delivery?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) postfix reload<br>b) postfix stop<br>c) postfix start<br>d) postfix restart<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) postfix reload<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">4) Which of the following protocols does postfix support for incoming mail delivery?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) SMTP<br>b) POP3<br>c) IMAP<br>d) All of the above<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) SMTP<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">5) Which of the following tools can be used to view the mail queue in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) mailq<br>b) postqueue<br>c) both a and b<br>d) neither a nor b<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) both a and b<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">6) Which of the following commands can be used to send a test email in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) mail test@test.com<br>b) echo &#8220;test message&#8221; | mail -s &#8220;test subject&#8221; test@test.com<br>c) posttest -s &#8220;test subject&#8221; -r test@test.com<br>d) sendmail test@test.com -s &#8220;test subject&#8221; -m &#8220;test message&#8221;<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) echo &#8220;test message&#8221; | mail -s &#8220;test subject&#8221; test@test.com<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">7) Which of the following configuration options can be used to specify the default mail transport agent in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) default_mta<br>b) default_mailer<br>c) default_transport<br>d) default_agent<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) default_transport<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">8) Which of the following commands can be used to view the postfix configuration parameters?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) postconfig<br>b) postconf<br>c) postfixconf<br>d) confpost<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) postconf<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">9) Which of the following configuration options can be used to specify the local delivery agent in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) local_transport<br>b) local_mailer<br>c) local_mta<br>d) local_agent<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) local_transport<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">10) Which of the following configuration options can be used to specify the internet hostname of the postfix server?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) myhostname<br>b) hostname<br>c) servername<br>d) mailname<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) myhostname<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">11) Which of the following configuration options can be used to specify the internet domain name of the postfix server?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) mydomain<br>b) domainname<br>c) serverdomain<br>d) maildomain<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) mydomain<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">12) Which of the following configuration options can be used to specify the maximum number of messages allowed in the mail queue in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) max_messages<br>b) max_queue_size<br>c) max_mail_q<br>d) maximal_queue_size<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) max_queue_size<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">13) Which of the following configuration options can be used to specify the maximum number of messages sent per minute by one client in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) max_messages_per_minute<br>b) max_client_message_rate<br>c) max_rate_per_client<br>d) maximal_client_message_rate<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) max_client_message_rate<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">14) Which of the following configuration options can be used to specify the maximum size of a single message that can be delivered by postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) max_message_size<br>b) max_mail_size<br>c) maximal_message_size<br>d) maximal_mail_size<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) maximal_message_size<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">15) Which of the following configuration options can be used to specify the SMTP greeting message in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_greeting_message<br>b) smtpd_banner<br>c) smtp_banner<br>d) smtpd_greeting_message<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_banner<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">16) Which of the following configuration options can be used to reject messages from certain domains in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) reject_domains<br>b) blacklist_domains<br>c) deny_domains<br>d) smtpd_sender_restrictions<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) smtpd_sender_restrictions<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">17) Which of the following configuration options can be used to reject messages from certain IP addresses in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_recipient_restrictions<br>b) smtpd_client_restrictions<br>c) deny_ip<br>d) reject_ip<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_client_restrictions<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">18) Which of the following configuration options can be used to reject messages with empty sender addresses in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_null_sender_restrictions<br>b) empty_sender_restrictions<br>c) reject_empty_senders<br>d) reject_null_senders<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) reject_null_senders<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">19) Which of the following configuration options can be used to specify the hostname of the relay server in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) relay_hostname<br>b) relay_servername<br>c) relay_host<br>d) relay_server<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) relay_host<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">20) Which of the following configuration options can be used to enable TLS encryption in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) enable_tls<br>b) tls_enabled<br>c) smtpd_tls_enable<br>d) tls_smtpd<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) smtpd_tls_enable<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">21) Which of the following configuration options can be used to specify the SSL certificate file in postfix for server authentication?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_tls_cert_file<br>b) smtpd_ssl_cert_file<br>c) tls_cert_file<br>d) ssl_cert_file<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) smtpd_tls_cert_file<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">22) Which of the following configuration options can be used to specify the SSL private key file in postfix for server authentication?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_tls_key_file<br>b) smtpd_ssl_key_file<br>c) tls_key_file<br>d) ssl_key_file<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) smtpd_tls_key_file<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">23) Which of the following configuration options can be used to specify the SSL certificate file in postfix for client authentication?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_tls_CAfile<br>b) smtpd_ssl_CAfile<br>c) tls_CAfile<br>d) ssl_CAfile<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) smtpd_tls_CAfile<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">24) Which of the following configuration options can be used to specify the SSL protocols supported by postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) tls_protocols<br>b) smtpd_tls_protocols<br>c) ssl_protocols<br>d) postfix_tls_protocols<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_tls_protocols<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">25) Which of the following configuration options can be used to specify the SSL ciphers used by postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_tls_ciphers<br>b) smtpd_ssl_ciphers<br>c) tls_ciphers<br>d) ssl_ciphers<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) smtpd_tls_ciphers<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">26) Which of the following configuration options can be used to block all outbound SMTP traffic except for authorized senders in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_sender_restrictions<br>b) smtpd_recipient_restrictions<br>c) smtpd_client_restrictions<br>d) smtpd_relay_restrictions<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) smtpd_relay_restrictions<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">27) Which of the following configuration options can be used to specify the email address for bounces in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) bounce_address<br>b) postmaster_address<br>c) error_address<br>d) return_address<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) postmaster_address<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">28) Which of the following configuration options can be used to specify the timeout for message delivery in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) timeout<br>b) delivery_timeout<br>c) message_delivery_timeout<br>d) smtp_timeout<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) smtp_timeout<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">29) Which of the following configuration options can be used to specify the maximum size of a single email attachment in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) message_size_limit<br>b) mail_size_limit<br>c) attachment_size_limit<br>d) maximal_attachment_size<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) mail_size_limit<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">30) Which of the following configuration options can be used to reject messages from blacklisted senders in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_helo_restrictions<br>b) smtpd_sender_restrictions<br>c) smtpd_recipient_restrictions<br>d) smtpd_client_restrictions<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sender_restrictions<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">31) Which of the following configuration options can be used to specify the maximum number of simultaneous connections to the postfix server?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) max_connections<br>b) smtpd_client_connection_limit<br>c) connection_limit<br>d) maximal_client_connections<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_client_connection_limit<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">32) Which of the following configuration options can be used to specify the maximum number of messages sent per second by one client in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) max_messages_per_second<br>b) max_client_message_rate<br>c) max_rate_per_client<br>d) maximal_client_message_rate<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: a) max_messages_per_second<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">33) Which of the following configuration options can be used to specify the maximum number of connections from one IP address in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) max_connections_per_ip<br>b) smtpd_client_connection_count_limit<br>c) connection_count_limit<br>d) maximal_client_connections_per_ip<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_client_connection_count_limit<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">34) Which of the following configuration options can be used to specify the maximum number of recipients per message in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) recipient_limit<br>b) max_recipients<br>c) mail_recipient_limit<br>d) maximal_recipient_count<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) mail_recipient_limit<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">35) Which of the following configuration options can be used to specify the transport map for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) transport_map<br>b) smtp_transport_map<br>c) mail_transport_map<br>d) postfix_transport_map<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) mail_transport_map<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">36) Which of the following configuration options can be used to specify the relay map for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) relay_map<br>b) smtp_relay_map<br>c) mail_relay_map<br>d) postfix_relay_map<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtp_relay_map<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">37) Which of the following configuration options can be used to specify the delivery map for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) delivery_map<br>b) smtp_delivery_map<br>c) mail_delivery_map<br>d) postfix_delivery_map<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: c) mail_delivery_map<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">38) Which of the following configuration options can be used to specify the destination for undeliverable mail in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) bounce_destination<br>b) postmaster_destination<br>c) error_destination<br>d) undeliverable_destination<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) postmaster_destination<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">39) Which of the following configuration options can be used to specify the relay host authorization map for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) relayhost_auth_map<br>b) smtp_sasl_auth_cache_name<br>c) relayhost_sasl_auth_cache_name<br>d) smtp_sasl_password_maps<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) smtp_sasl_password_maps<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">40) Which of the following configuration options can be used to specify the SASL authentication method for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtpd_sasl_auth_enable<br>b) smtp_sasl_auth_enable<br>c) sasl_auth_enable<br>d) postfix_sasl_auth_enable<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtp_sasl_auth_enable<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">41) Which of the following configuration options can be used to specify the SASL security options for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_security_options<br>b) smtpd_sasl_security_options<br>c) sasl_security_options<br>d) postfix_sasl_security_options<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_security_options<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">42) Which of the following commands can be used to test the SASL authentication mechanism in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) sasltest<br>b) authtest<br>c) smtpauth<br>d) testsaslauthd<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: d) testsaslauthd<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">43) Which of the following configuration options can be used to specify the SASL realm for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_realm<br>b) smtpd_sasl_realm<br>c) sasl_realm<br>d) postfix_sasl_realm<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_realm<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">44) Which of the following configuration options can be used to specify the SASL mechanism for postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_mechanism<br>b) smtpd_sasl_mechanism<br>c) sasl_mechanism<br>d) postfix_sasl_mechanism<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_mechanism<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">45) Which of the following configuration options can be used to specify the SASL settings for TLS in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_tls_security_options<br>b) smtpd_sasl_tls_security_options<br>c) sasl_tls_security_options<br>d) postfix_sasl_tls_security_options<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_tls_security_options<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">46) Which of the following configuration options can be used to specify the SASL settings for CRAM-MD5 in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_cram_md5_enable<br>b) smtpd_sasl_cram_md5_enable<br>c) sasl_cram_md5_enable<br>d) postfix_sasl_cram_md5_enable<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_cram_md5_enable<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">47) Which of the following configuration options can be used to specify the SASL settings for DIGEST-MD5 in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_digest_md5_enable<br>b) smtpd_sasl_digest_md5_enable<br>c) sasl_digest_md5_enable<br>d) postfix_sasl_digest_md5_enable<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_digest_md5_enable<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">48) Which of the following configuration options can be used to specify the SASL settings for LOGIN in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_login_enable<br>b) smtpd_sasl_login_enable<br>c) sasl_login_enable<br>d) postfix_sasl_login_enable<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_login_enable<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">49) Which of the following configuration options can be used to specify the SASL settings for PLAIN in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_plain_enable<br>b) smtpd_sasl_plain_enable<br>c) sasl_plain_enable<br>d) postfix_sasl_plain_enable<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_plain_enable<\/h4>\n\n\n\n<h3 class=\"wp-block-heading\">50) Which of the following configuration options can be used to specify the SASL authentication cache in postfix?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">a) smtp_sasl_auth_cache_name<br>b) smtpd_sasl_auth_cache_name<br>c) sasl_auth_cache_name<br>d) postfix_sasl_auth_cache_name<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Answer: b) smtpd_sasl_auth_cache_name<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>1) Which of the following is the correct syntax for postfix&#8217;s main configuration file? a) \/etc\/postfix\/mainconfig.cfb) \/etc\/postfix\/main.cfc) \/etc\/postfix\/config.cfd) \/etc\/config\/postfix.cf Answer: [&hellip;]<\/p>\n","protected":false},"author":33,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10445","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Postfix Interview Questions with Answers - scmGalaxy<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.scmgalaxy.com\/tutorials\/top-50-postfix-interview-questions-with-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 50 Postfix Interview Questions with Answers - 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