{"id":40152,"date":"2021-07-29T11:50:19","date_gmt":"2021-07-29T09:50:19","guid":{"rendered":"https:\/\/kinsta.com\/?p=63364"},"modified":"2023-09-21T09:48:24","modified_gmt":"2023-09-21T09:48:24","slug":"smtp-port","status":"publish","type":"post","link":"https:\/\/kinsta.com\/se\/blog\/smtp-port\/","title":{"rendered":"S\u00e5 v\u00e4ljer du r\u00e4tt SMTP-port (Port 25, 587, 465 eller 2525)"},"content":{"rendered":"<p>K\u00e4mpar du med att reda ut vilken SMTP-port som \u00e4r r\u00e4tt att anv\u00e4nda f\u00f6r dig? Det \u00e4r en situation vi nog alla k\u00e4nner igen!<\/p>\n<p>Om du anv\u00e4nder en mejlklient som Apple Mail eller Outlook f\u00f6r att skicka mejl, anv\u00e4nder den mejlklienten f\u00f6rmodligen ocks\u00e5 SMTP f\u00f6r att ladda upp dina utg\u00e5ende mejl till din mejlserver (<em>\u00e4ven om dessa klienter vanligtvis anv\u00e4nder andra protokoll som IMAP eller POP3 f\u00f6r att ladda ner inkommande mejlmeddelanden till appen<\/em>).<\/p>\n<p>Om du dessutom <a href=\"https:\/\/kinsta.com\/se\/blog\/wordpress-inte-skicka-e-post\/\">k\u00e4mpar med mejlleverans p\u00e5 WordPress<\/a> \u00e4r ett av de b\u00e4sta s\u00e4tten att \u00e5tg\u00e4rda problemet att anv\u00e4nda\u00a0<a href=\"https:\/\/kinsta.com\/se\/blog\/kostnadfri-smtp-server\/\">en SMTP-s\u00e4ndningstj\u00e4nst<\/a>\u00a0som <a href=\"https:\/\/kinsta.com\/se\/blog\/sendgrid-wordpress\/\">SendGrid<\/a>,\u00a0<a href=\"https:\/\/kinsta.com\/blog\/mailgun-wordpress\/\">Mailgun<\/a>, eller\u00a0<a href=\"https:\/\/kinsta.com\/blog\/google-workspace\/\">Google Workspace<\/a>.<\/p>\n<p>Men om du f\u00f6rs\u00f6ker st\u00e4lla in SMTP med din mejlklient eller din WordPress-sajt kommer du f\u00f6rmodligen att st\u00f6ta p\u00e5 fr\u00e5gan om vilken SMTP-port som ska anv\u00e4ndas.<\/p>\n<p>F\u00f6r att hj\u00e4lpa dig att v\u00e4lja den SMTP-port som b\u00e4st passar dina behov kommer vi att gr\u00e4va i allt som har SMTP-portar att g\u00f6ra i det h\u00e4r inl\u00e4gget.<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<p><strong>Kolla in v\u00e5r <a href=\"https:\/\/www.youtube.com\/watch?v=5lkLFGfb0G8\">videoguide om hur du v\u00e4ljer r\u00e4tt SMTP-portnummer<\/a>:<\/strong><\/p>\n<p class=\"p1\"><kinsta-video src=\"https:\/\/www.youtube.com\/watch?v=5lkLFGfb0G8\"><\/kinsta-video><\/p>\n\n<p>L\u00e5t oss f\u00f6rst\u00e5 denna process mer i detalj.<\/p>\n<p>Som vi n\u00e4mnde tidigare \u00e4r SMTP standardprotokollet f\u00f6r e-post\u00f6verf\u00f6ring p\u00e5 webben. Det \u00e4r vad mejlservrar anv\u00e4nder f\u00f6r att skicka och ta emot mejl p\u00e5 Internet.<\/p>\n<p>N\u00e4r du till exempel skickar ett mejl beh\u00f6ver din mejlklient ett s\u00e4tt att ladda upp mejlet till den utg\u00e5ende mejlservern. Sedan beh\u00f6ver den utg\u00e5ende mejlservern ett s\u00e4tt att \u00f6verf\u00f6ra ditt mejl till mottagarens inkommande mejlserver.<\/p>\n<p>Mejlservrar \u00e4r ungef\u00e4r som webbplatsservrar; medan det kan finnas ett anv\u00e4ndarv\u00e4nligt och synligt <a href=\"https:\/\/kinsta.com\/se\/blog\/hur-mycket-kostar-ett-domannamn\/\">dom\u00e4nnamn<\/a> sker den faktiska kommunikationen via IP-adresser, som 222.501.285.45 (f\u00f6r mer information om hur detta g\u00e5r till,\u00a0<a href=\"https:\/\/kinsta.com\/se\/blog\/vad-ar-dns\/\">kolla in v\u00e5r introduktion till dom\u00e4nnamnssystemet eller DNS<\/a>).<\/p>\n<p>En \u201dport\u201d \u00e4r ett annat s\u00e4tt att hj\u00e4lpa datorer (<em>som tv\u00e5 mejlservrar<\/em>) att kommunicera med varandra:<\/p>\n<ul>\n<li>En IP-adress identifierar en dator.<\/li>\n<li>En port identifierar en specifik applikation\/tj\u00e4nst som k\u00f6rs p\u00e5 den datorn, som SMTP.<\/li>\n<\/ul>\n<p>H\u00e4r \u00e4r en analogi f\u00f6r att g\u00f6ra det lite mer m\u00e4nniskov\u00e4nligt:<\/p>\n<p>En IP-adress \u00e4r den fysiska gatuadressen till ett aff\u00e4rskomplex. En port \u00e4r antalet specifika f\u00f6retag i det aff\u00e4rskomplexet.<\/p>\n<p>Om du vill leverera n\u00e5got till den verksamheten, kan du inte bara adressera det till aff\u00e4rskomplexet, du beh\u00f6ver ocks\u00e5 ett s\u00e4tt att se till att det kommer till r\u00e4tt plats i aff\u00e4rskomplexet.<\/p>\n<p><a href=\"https:\/\/www.iana.org\/\">IANA<\/a>, den organisation som ansvarar f\u00f6r global IP-adressf\u00f6rdelning och andra uppgifter, ansvarar ocks\u00e5 f\u00f6r att registrera portnummer f\u00f6r gemensamma internettj\u00e4nster, vilket inkluderar SMTP.<\/p>\n<h2 id=\"why\">Varf\u00f6r spelar din SMTP-port roll?<\/h2>\n<p>Om du vill ansluta till en SMTP-server (som\u00a0<a href=\"https:\/\/kinsta.com\/se\/blog\/gmail-smtp-servern\/\">Gmails SMTP-Server<\/a>) m\u00e5ste du ange b\u00e5de dess IP-adress och dess portnummer.<\/p>\n<p>Det finns dock flera vanliga SMTP-portar (mer om detta h\u00e4rn\u00e4st) och inte alla fungerar i alla situationer.<\/p>\n<p>Till exempel, port 25, som \u00e4r standard SMTP-port f\u00f6r att flytta meddelanden mellan mejlservrar, blockeras ofta av Internetleverant\u00f6rer och molnleverant\u00f6rer (inklusive Google Cloud Platform, vilket \u00e4r vad Kinsta anv\u00e4nder).<\/p>\n<p>Om du f\u00f6rs\u00f6ker ansluta till en SMTP-server via port 25 kommer du ofta att st\u00f6ta p\u00e5 problem eftersom s\u00e5 m\u00e5nga tj\u00e4nster blockerar port 25.<\/p>\n<h3>Olika portar f\u00f6r olika \u00e4ndam\u00e5l<\/h3>\n<p>Ut\u00f6ver implikationerna ovan har olika SMTP-portar ocks\u00e5 olika \u00e4ndam\u00e5l.<\/p>\n<p>Det finns tv\u00e5 breda stadier inom SMTP-\u00f6verf\u00f6ring:<\/p>\n<ul>\n<li><strong>Skicka<\/strong>\u00a0\u2013 skicka ett mejl till en utg\u00e5ende mejlserver. N\u00e4r du till exempel skickar ett mejl i Apple Mail m\u00e5ste det meddelandet skickas till den utg\u00e5ende mejlservern.<\/li>\n<li><strong>Vidarebefordra \u2013<\/strong> processen att vidarebefordra meddelandet mellan tv\u00e5 servrar. S\u00e5 efter att ett mejl \u201dskickas\u201d till den utg\u00e5ende mejlservern vidarebefordrar den utg\u00e5ende mejlservern det meddelandet till mottagarens mejlserver.<\/li>\n<\/ul>\n<p>Om du st\u00e4ller in din mejlklient eller WordPress-sajt \u00e4r det skickandet som \u00e4r viktigast f\u00f6r dig.<\/p>\n<p>Medan vidarebefordran definitivt \u00e4r en viktig del av SMTP beh\u00f6ver de flesta inte konfigurera sin egen mejlserver.<\/p>\n<h2 id=\"ports\">Vilken port anv\u00e4nder SMTP?<\/h2>\n<p>P\u00e5 den moderna webben finns det inte en enskild SMTP-port. I st\u00e4llet finns det fyra vanliga SMTP-portar:<\/p>\n<ul>\n<li>25<\/li>\n<li>587<\/li>\n<li>465<\/li>\n<li>2525<\/li>\n<\/ul>\n<p>Vi g\u00e5r igenom dem allihop.<\/p>\n<h3>Vad anv\u00e4nds Port 25 f\u00f6r?<\/h3>\n<p>Port 25 etablerades redan 1982, vilket g\u00f6r den till den \u00e4ldsta SMTP-porten.<\/p>\n<p>Port 25 \u00e4r fortfarande k\u00e4nd som den SMTP-porten som brukas som standard, och det anv\u00e4nds mest f\u00f6r\u00a0<strong>SMTP-vidarebefordringar.<\/strong><\/p>\n<p>Men om du st\u00e4ller in din WordPress-sajt eller mejlklient med SMTP, b\u00f6r du oftast <strong>inte<\/strong>\u00a0anv\u00e4nda port 25 eftersom de flesta Internetleverant\u00f6rer och molnleverant\u00f6rer blockerar port 25.<\/p>\n<p>Varf\u00f6r? Eftersom port 25 ofta missbrukas f\u00f6r att skicka spam fr\u00e5n komprometterade datorer.<\/p>\n<p>Kom ih\u00e5g: det finns en skillnad mellan SMTP-skick och vidarebefordran. S\u00e5 medan SMTP-port 25 \u00e4r bra f\u00f6r SMTP-vidarebefordran \u00e4r det inte ett bra alternativ f\u00f6r SMTP-skick.<\/p>\n<h3>Vad anv\u00e4nds Port 587 f\u00f6r?<\/h3>\n<p>Port 587 \u00e4r standardporten f\u00f6r att skicka mejl via SMTP p\u00e5 den moderna webben. Medan du kan anv\u00e4nda andra portar f\u00f6r att skicka (mer om det h\u00e4rn\u00e4st), b\u00f6r du alltid b\u00f6rja med port 587 som standard och bara anv\u00e4nda en annan port om omst\u00e4ndigheterna kr\u00e4ver det (som om din v\u00e4rd blockerar port 587 av n\u00e5gon anledning).<\/p>\n<p>Port 587 st\u00f6der ocks\u00e5\u00a0<a href=\"https:\/\/kinsta.com\/se\/blog\/tls-vs-ssl\/\">TLS<\/a>, vilket inneb\u00e4r att du kan skicka mejl s\u00e4kert.<\/p>\n<h3>Vad anv\u00e4nds Port 465 f\u00f6r?<\/h3>\n<p>Port 465 registrerades ursprungligen f\u00f6r SMTPS (SMTP \u00f6ver SSL). Efter en kort period med den funktionen fick port 465 en annan anv\u00e4ndning.<\/p>\n<p>Trots detta \u00e4r det m\u00e5nga Internetleverant\u00f6rer och molnleverant\u00f6rer som fortfarande st\u00f6der port 465 f\u00f6r att skicka via SMTP.<\/p>\n<h3>Vad anv\u00e4nds Port 2525 f\u00f6r?<\/h3>\n<p>Port 2525 \u00e4r inte en officiell SMTP-port (som erk\u00e4nns av IETF eller IANA). Den anv\u00e4nds dock fortfarande som ett popul\u00e4rt alternativ till port 587 f\u00f6r att skicka via SMTP och de flesta Internetleverant\u00f6rer och molnleverant\u00f6rer st\u00f6der port 2525 f\u00f6r SMTP.<\/p>\n<p>Om port 587 \u00e4r blockerad, \u00e4r port 2525 ett bra alternativ.<\/p>\n<h2 id=\"which\">Vilken SMTP-port borde du anv\u00e4nda?<\/h2>\n<p>Vi ber\u00f6rde detta ovan, men l\u00e5t oss sammanfatta hur du v\u00e4ljer r\u00e4tt SMTP-port eftersom det \u00e4r viktigt att fatta r\u00e4tt beslut.<\/p>\n<p>Om du konfigurerar din WordPress-sajt eller mejlklient f\u00f6r att skicka mejl via SMTP (skicka), borde du n\u00e4stan alltid anv\u00e4nda\u00a0<strong>port 587<\/strong>. \u00c5terigen \u00e4r denna SMTP-port standard f\u00f6r att skicka mejl och den st\u00f6der s\u00e4ker \u00f6verf\u00f6ring via TLS.<\/p>\n<p>Om port 587 blockeras av n\u00e5gon anledning,\u00a0\u00e4r <strong>port 2525\u00a0<\/strong>ett vanligt alternativ. \u00c5terigen \u00e4r detta inte en officiellt erk\u00e4nd SMTP-port, men den anv\u00e4nds ofta och st\u00f6ds av de flesta leverant\u00f6rer.<\/p>\n<p>Medan m\u00e5nga leverant\u00f6rer fortfarande st\u00f6der\u00a0<strong>port 465<\/strong>\u00a0f\u00f6r SMTP \u00e4r det inte l\u00e4ngre en accepterad standard och du b\u00f6r alltid f\u00f6rs\u00f6ka anv\u00e4nda portarna 587 och 2525 innan du anv\u00e4nder port 465.<\/p>\n<p>Slutligen, medan\u00a0<strong>port 25<\/strong>\u00a0anv\u00e4nds ofta f\u00f6r SMTP-vidarebefordran b\u00f6r du inte anv\u00e4nda den n\u00e4r du st\u00e4ller in en mejlklient eller WordPress-sajt eftersom de flesta Internetleverant\u00f6rer och molnleverant\u00f6rer blockerar port 25.<\/p>\n<h3>Vilka SMTP-portar kan du anv\u00e4nda p\u00e5 Kinsta?<\/h3>\n<p>P\u00e5 Kinsta kan du anv\u00e4nda f\u00f6ljande portar:<\/p>\n<ul>\n<li>587<\/li>\n<li>465<\/li>\n<li>2525<\/li>\n<\/ul>\n<p>Du kan inte anv\u00e4nda port 25 eftersom Kinsta anv\u00e4nder Google Cloud Platforms infrastruktur och\u00a0<a href=\"https:\/\/cloud.google.com\/compute\/docs\/tutorials\/sending-mail\/\">Google Cloud Platform blockerar port 25<\/a>.<\/p>\n\n<h2>Sammanfattning<\/h2>\n<p>SMTP spelar en viktig roll f\u00f6r att flytta omkring mejl p\u00e5 Internet.<\/p>\n<p>F\u00f6r att f\u00f6rb\u00e4ttra leveransen av din WordPress-sajts <a href=\"https:\/\/kinsta.com\/docs\/wordpress-hosting\/mykinsta-tools\/email\/\">transaktionsmejl<\/a> kan du konfigurera din WordPress-sajt f\u00f6r att skicka mejl via SMTP. Om du anv\u00e4nder en mejlklient som Apple Mail eller <a href=\"https:\/\/kinsta.com\/se\/blog\/outlook-smtp-installningar\/\">Outlook<\/a>, anv\u00e4nder ocks\u00e5 din mejlklient SMTP f\u00f6r att skicka utg\u00e5ende mejl till mejlservern.<\/p>\n<p>F\u00f6r att ansluta din WordPress-sajt eller mejlklient till SMTP-servern m\u00e5ste du ange en specifik SMTP-port.<\/p>\n<p>Det finns fyra vanliga SMTP-portar:<\/p>\n<ul>\n<li>25<\/li>\n<li>587<\/li>\n<li>465<\/li>\n<li>2525<\/li>\n<\/ul>\n<p>Port 25 anv\u00e4nds ofta f\u00f6r SMTP-vidarebefordringar men du b\u00f6r inte anv\u00e4nda den f\u00f6r att skicka via SMTP eftersom de flesta leverant\u00f6rer blockerar den.<\/p>\n<p>Om du vill konfigurera din WordPress-sajt eller mejlklient till att anv\u00e4nda SMTP, b\u00f6r du b\u00f6rja med port 587 som ditt f\u00f6rsta val, eftersom det \u00e4r standardporten f\u00f6r att skicka via SMTP.<\/p>\n<p>Och om port 587 inte fungerar kan du prova port 2525. \u00c4ven om det inte \u00e4r en officiellt erk\u00e4nd SMTP-port, st\u00f6ds den allm\u00e4nt och st\u00f6der TLS f\u00f6r s\u00e4ker \u00f6verf\u00f6ring.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>K\u00e4mpar du med att reda ut vilken SMTP-port som \u00e4r r\u00e4tt att anv\u00e4nda f\u00f6r dig? Det \u00e4r en situation vi nog alla k\u00e4nner igen! Om du &#8230;<\/p>\n","protected":false},"author":103,"featured_media":40154,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[76,290],"topic":[813],"class_list":["post-40152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-emailmarketing","tag-smtp","topic-smtp"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>S\u00e5 v\u00e4ljer du r\u00e4tt SMTP-port (Port 25, 587, 465 eller 2525)<\/title>\n<meta name=\"description\" content=\"F\u00f6rs\u00f6ker du v\u00e4lja r\u00e4tt SMTP-port? 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