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The short answer: the details are always the same four (server, port, username and password) plus the sender, but every program calls them something different. The table below tells you what to enter under each name you will meet. Where most people go wrong is the encryption: port 587 takes STARTTLS, port 465 takes TLS (or SSL).
The name on screen and what to enter
| It may appear as | What to enter |
| Server, Host, SMTP Host, Outgoing server | The server shown in the Email Center Connection card. It is not the server of your mailboxes. |
| Port | 587, or 465 if 587 is blocked on your network. |
| Encryption, Security, Secure connection | With 587: STARTTLS (many plugins just call it «TLS»). With 465: SSL/TLS (older programs say «SSL»). |
| Authentication, SMTP Auth, «My server requires authentication» | On. If the program asks for a method, leave it on automatic. |
| Username, Login, User | The SMTP credential username, exactly as the Email Center showed it. It is not your e-mail address. |
| Password | The credential password, the one shown only once. |
| From, From address, Sender | An address on a verified domain, for example no-reply@asuaempresa.co.mz. |
| From name | The name your customer sees in the inbox: your company or website name. |
| Reply-To | Optional: a real mailbox where replies should go. |
| Swapping port and encryption gives a «TLS error». The rule is simple: 587 with STARTTLS, 465 with TLS. Do not mix them. Port 25 and «no encryption» are not part of these settings. Why there are three ports is explained in SMTP ports 465, 587 and 25. |
Where these fields usually are
| Program | Where to look |
| WordPress | In your SMTP plugin, choose «Other SMTP», TLS and port 587. See moving WordPress to SMTP Relay. |
| Laravel and PHP frameworks | In the .env file. See SMTP Relay in Laravel. |
| PHPMailer | In the Host, Port, SMTPSecure, Username and Password properties. See PHPMailer. |
| Node.js and Python | In the Nodemailer or smtplib configuration. See the examples. |
| Printers and devices | On the device configuration page, under E-mail or SMTP. See connecting devices. |
| ERP and billing software | In the e-mail or document sending settings. See invoices through SMTP Relay. |
| Some programs have a «Force From» option. Turn it on and enter an address on your verified domain: that way no e-mail leaves with another sender and gets refused. |
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Not sure which field is which in your program? Send us a screenshot of the settings, without the password, and we will tell you what to enter. Open a support ticket |
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