[{"data":1,"prerenderedAt":306},["ShallowReactive",2],{"navigation":3,"/blog/corecomponent":15,"/blog/corecomponent-surround":295},[4],{"title":5,"path":6,"stem":7,"children":8},"Getting Started","/docs/getting-started","1.docs/1.getting-started/1.index",[9,11],{"title":10,"path":6,"stem":7},"Introduction",{"title":12,"path":13,"stem":14},"Installation","/docs/getting-started/installation","1.docs/1.getting-started/2.installation",{"id":16,"title":17,"authors":18,"badge":24,"body":26,"date":284,"description":285,"extension":286,"image":287,"meta":289,"navigation":290,"path":291,"seo":292,"stem":293,"__hash__":294},"posts/3.blog/7.corecomponent.md","📧 Postfix vs Dovecot Core Function Comparison ",[19],{"name":20,"to":21,"avatar":22},"Helen","https://x.com/HelenDailyLife",{"src":23},"https://images.once-email.com/header/master/h1.webp",{"label":25},"core component",{"type":27,"value":28,"toc":269},"minimal",[29,34,47,51,56,64,84,91,95,100,120,125,129,196,202,214,218,228,232,258,266],[30,31,33],"h2",{"id":32},"why-build-your-own-email-server","🧭 Why Build Your Own Email Server?",[35,36,37,41,44],"ul",{},[38,39,40],"li",{},"Filter out spam from Gmail and other email providers",[38,42,43],{},"Prevent third parties from permanently storing your emails, protect privacy",[38,45,46],{},"Full control over your email data without relying on third-party services",[30,48,50],{"id":49},"postfix-vs-dovecot-in-depth-core-function-comparison","🔍 Postfix vs Dovecot: In-Depth Core Function Comparison",[52,53,55],"h3",{"id":54},"postfix-mail-transfer-agent-mta","📮 Postfix: Mail Transfer Agent (MTA)",[57,58,59,60],"p",{},"✅ ",[61,62,63],"strong",{},"Role: Responsible for sending and receiving emails",[35,65,66,72,78],{},[38,67,68,71],{},[61,69,70],{},"Receive external emails (SMTP):"," Accept emails from other mail servers (e.g., Gmail)",[38,73,74,77],{},[61,75,76],{},"Send local emails to external (SMTP):"," Users sending emails to the outside world",[38,79,80,83],{},[61,81,82],{},"Deliver emails to local mailbox directories (e.g., Maildir):"," For user viewing",[57,85,86,87,90],{},"🧠 ",[61,88,89],{},"Analogy:"," Like a postal worker, responsible for sorting, receiving, and delivering mail.",[52,92,94],{"id":93},"dovecot-mail-delivery-agent-mda-mail-access-server-imappop3","📚 Dovecot: Mail Delivery Agent (MDA) + Mail Access Server (IMAP/POP3)",[57,96,59,97],{},[61,98,99],{},"Role: Responsible for letting users read emails",[35,101,102,108,114],{},[38,103,104,107],{},[61,105,106],{},"Provides mail access protocols (IMAP/POP3):"," Allows email clients (Outlook, Thunderbird, mobile mail apps) to access server emails",[38,109,110,113],{},[61,111,112],{},"User authentication:"," Verifies username and password",[38,115,116,119],{},[61,117,118],{},"Reads locally stored emails (Maildir or mbox):"," Enables clients to display email content",[57,121,86,122,124],{},[61,123,89],{}," Like a librarian, fetching “books” (emails) on request and showing them to you.",[52,126,128],{"id":127},"summary-comparison-table","🧾 Summary Comparison Table:",[130,131,132,148],"table",{},[133,134,135],"thead",{},[136,137,138,142,145],"tr",{},[139,140,141],"th",{},"Feature",[139,143,144],{},"Postfix",[139,146,147],{},"Dovecot",[149,150,151,163,174,185],"tbody",{},[136,152,153,157,160],{},[154,155,156],"td",{},"Main Role",[154,158,159],{},"Send and receive emails (SMTP)",[154,161,162],{},"Provide mail access services (IMAP/POP3)",[136,164,165,168,171],{},[154,166,167],{},"Service Type",[154,169,170],{},"MTA (Mail Transfer Agent)",[154,172,173],{},"MDA + IMAP/POP3 server",[136,175,176,179,182],{},[154,177,178],{},"User Interface",[154,180,181],{},"Not directly user-facing",[154,183,184],{},"Provides user access interface (email clients)",[136,186,187,190,193],{},[154,188,189],{},"Mail Storage",[154,191,192],{},"Optional (usually handled by Dovecot)",[154,194,195],{},"Reads and serves mail",[57,197,198,199],{},"👉 ",[61,200,201],{},"If you want to build an email server, these two components must work together:",[35,203,204,209],{},[38,205,206],{},[61,207,208],{},"Postfix handles sending and receiving mail;",[38,210,211],{},[61,212,213],{},"Dovecot handles user mail reading and access.",[30,215,217],{"id":216},"️️-how-to-configure-and-set-up","🛠️⚙️ How to configure and set up",[57,219,220,221],{},"Click here ",[222,223,227],"a",{"href":224,"rel":225},"https://once-email.com/blog/buildemail",[226],"nofollow","How to Build a Secure Email Server with Postfix and Dovecot: Step-by-Step Guide",[30,229,231],{"id":230},"authoritative-references","📖 Authoritative References",[35,233,234,242,250],{},[38,235,236,241],{},[222,237,240],{"href":238,"rel":239},"https://support.google.com/mail/answer/81126",[226],"Google Email Sender Guidelines (2024)",": Emphasizes DKIM/SPF as key anti-spam measures",[38,243,244,249],{},[222,245,248],{"href":246,"rel":247},"https://doc.dovecot.org/configuration_manual/",[226],"Dovecot Docs",": The most authoritative configuration guide",[38,251,252,257],{},[222,253,256],{"href":254,"rel":255},"https://www.postfix.org/documentation.html",[226],"Postfix Docs",": The official website for Postfix, the open-source Mail Transfer Agent (MTA)",[30,259,261,262],{"id":260},"try-privacy-first-email-at-httpsonce-emailcom","💡 Try Privacy-First Email at 👉 ",[222,263,264],{"href":264,"rel":265},"https://once-email.com",[226],[57,267,268],{},"No signup. No spam. Just freedom.",{"title":270,"searchDepth":271,"depth":271,"links":272},"",2,[273,274,280,281,282],{"id":32,"depth":271,"text":33},{"id":49,"depth":271,"text":50,"children":275},[276,278,279],{"id":54,"depth":277,"text":55},3,{"id":93,"depth":277,"text":94},{"id":127,"depth":277,"text":128},{"id":216,"depth":271,"text":217},{"id":230,"depth":271,"text":231},{"id":260,"depth":271,"text":283},"💡 Try Privacy-First Email at 👉 https://once-email.com","2025-05-28","This guide compares the core roles of each component—SMTP mail transfer vs. IMAP access and helps you take back control of your inbox with a self-hosted solution.","md",{"src":288},"https://images.once-email.com/images/core-component.jpg",{},true,"/blog/corecomponent",{"title":17,"description":285},"3.blog/7.corecomponent","mz0Il-iiy5BvS3HT7CPf_wCCKlheoQFlKH_Xw88sxBA",[296,301],{"title":297,"path":298,"stem":299,"description":300,"children":-1},"How to Use Temporary Email to Sign Up for ChatGPT, Reddit & More | Once-Email","/blog/register","3.blog/6.register","Protect your privacy and avoid spam—learn how to use Once-Email’s free temporary inbox to register on ChatGPT, Reddit, eCommerce sites, and more in under 1 minute.",{"title":302,"path":303,"stem":304,"description":305,"children":-1},"How to Build a Secure Email Server with Postfix and Dovecot: Step-by-Step Guide.","/blog/buildemail","3.blog/8.buildemail","🔐 Learn how to build a secure email server using Postfix and Dovecot on Ubuntu or Debian. This step-by-step guide covers SMTP, IMAP, TLS/SSL encryption, spam protection, DNS records, SSL certificates, and user authentication—everything you need to run a private, secure, self-hosted mail system.",1748500873574]