Join 20,000+ others who get our weekly newsletter with insider WordPress tips! Want to know how we increased our traffic over 1000%? Port 25 was established all the way back in 1982, which makes it the oldest SMTP port. Instead, there are four common SMTP ports: On the modern web, thereРІР‚в„ўs not a single SMTP port. While РІР‚СљrelayРІР‚Сњ is definitely an important part of SMTP, most people donРІР‚в„ўt need to configure their own email server. If youРІР‚в„ўre setting up your email client or WordPress site, youРІР‚в„ўre mostly concerned with the РІР‚СљsubmissionРІР‚Сњ part of the process. So after an email is РІР‚СљsubmittedРІР‚Сњ to the outgoing mail server, the outgoing mail server РІР‚СљrelaysРІР‚Сњ that message to the recipientРІР‚в„ўs mail server.

Relay РІР‚вЂњ the process of relaying the message between two servers.

For example, when you send an email in Apple Mail, that message needs to be submitted to the outgoing mail server.

Submission РІР‚вЂњ submitting an email message to an outgoing mail server.There are two broad stages in SMTP transmission: However, there are multiple common SMTP ports (more on this next) and not all of them work in all situations.Р”Р‡or example, port 25, the standard SMTP port for moving messages between mail servers, is often blocked by ISPs and cloud providers (including Google Cloud Platform, which is what Kinsta uses).Р”Р„s such, if you try to connect to an SMTP server via port 25, youРІР‚в„ўll often encounter issues because so many services block port 25.Р”В«eyond the implications above, different SMTP ports also have different purposes. If you want to connect to an SMTP server (like the Gmail SMTP Server), you need to enter both its IP address and its port number. IANA, the organization responsible for global IP address allocation and other tasks, is also responsible for registering port numbers for common Internet services, which includes SMTP. If you want to deliver something to that business, you canРІР‚в„ўt just address it to the business complex, you also need a way to make sure it gets to the right place inside the business complex. A port is the number of a specific business in that business complex. HereРІР‚в„ўs an analogy to make it a little more human-friendly:Р”Р„n IP address is the physical street address of a business complex. A port identifies a specific application/service running on that computer, like SMTP.Mail servers are much like website servers in that, while there might be a user-friendly front-facing domain name, the actual communication happens via IP addresses, like 222.501.285.45 (for more on how this happens, check out our introduction to the Domain Name System, or DNS).Р”Р„ РІР‚СљportРІР‚Сњ is another way to help computers ( like two mail servers) communicate with one another: Then, the outgoing mail server needs a way to transfer your email to the recipientРІР‚в„ўs incoming mail server. ItРІР‚в„ўs what mail servers use to send and receive emails on the Internet.Р”Р‡or example, when you send an email, your email client needs a way to upload the email to the outgoing mail server.

SMTP, short for Simple Mail Transfer Protocol, is the standard protocol for email transmission on the web.

Preferred outgoing mail server mac