Host your own SMTP server means setting up and managing an email-sending server that handles outgoing mail for your domain without relying on third-party email services. In practice, this involves deploying a mail transfer agent (MTA) like Postfix or Exim on a server, configuring DNS records (MX, SPF, DKIM, DMARC), securing the server with authentication […]

The main email servers are SMTP (for sending email), IMAP, and POP3 (for receiving email), and they use specific ports to communicate securely over the internet. SMTP commonly uses ports 587 and 465, IMAP uses 993, and POP3 uses 995 for secure connections. Choosing the correct server type and port is essential to ensure reliable,

To find your SMTP server IP address, first identify your email provider (such as Gmail, Outlook, or your web hosting company), then locate the SMTP hostname in your email settings (for example, smtp.gmail.com) and use tools like DNS lookup, command prompt, or online MX/IP lookup services to resolve that hostname into its actual IP address.

You can find your SMTP server on your iPhone by going to Settings → Mail → Accounts → select your email account → Account → SMTP, where your outgoing mail server details (server name, port, security type, and authentication) are listed. This section shows the SMTP server your iPhone uses to send emails, whether your