Some internet access providers have port 25 disabled in their routers to prevent spam. If you run your own mailserver in a datacenter, you might have to enable the submission port (587) in postfix to be able to send emails from your local email client to your own mailserver.<\/p>\n
To enable port 587, edit the file \/etc\/postfix\/master.cf<\/p>\n
vi \/etc\/postfix\/master.cf<\/p>\n
and remove the # in front of the line:<\/p>\n
#submission inet n \u2013 n \u2013 \u2013 smtpd<\/p>\n
so that it looks like this:<\/p>\n
submission inet n \u2013 n \u2013 \u2013 smtpd<\/p>\n
and restart postfix:<\/p>\n
\/etc\/init.d\/postfix restart<\/p>\n
Cr\u00e9ditos:\u00a0http:\/\/www.faqforge.com\/linux\/how-to-enable-port-587-submission-in-postfix\/<\/p>\n","protected":false},"excerpt":{"rendered":"
Some internet access providers have port 25 disabled in their routers to prevent spam. If you run your own mailserver in a datacenter, you might have to enable the submission<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-428","post","type-post","status-publish","format-standard","hentry","category-firewall"],"_links":{"self":[{"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=\/wp\/v2\/posts\/428"}],"collection":[{"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=428"}],"version-history":[{"count":3,"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=\/wp\/v2\/posts\/428\/revisions"}],"predecessor-version":[{"id":431,"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=\/wp\/v2\/posts\/428\/revisions\/431"}],"wp:attachment":[{"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=428"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/binsfeld.com.br\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}