Gmail SMTP errors and codes - Google Workspace Admin Help
Gmail requires all bulk email senders to use TLS/SSL for SMTP connections. To set up TLS for email, visit TLS & SSL connections . To learn more about Gmail requirements for bulk email senders, visit Email sender guidelines .
Set up Gmail with a third-party email client - Google Help
Outgoing server (SMTP): 587. Use the following type of encrypted connection: TLS; Note: If you change the Outgoing server (SMTP) encrypted connection type to SSL, enter 465 in the Outgoing server (SMTP) field (instead of 587). Then click OK. Outlook tests your settings and then shows a message when your account is correctly set up:
透過 Google 轉送 SMTP 轉發服務的外寄郵件
透過 Google 伺服器設定 SMTP 轉發服務的地端部署電子郵件伺服器 如果貴機構使用 Microsoft Exchange 或其他 SMTP 服務或伺服器，您可以設定 SMTP 轉發服務，透過 Google 轉送外寄郵件。該服務有以下功能： 在外部收件者收到郵件前先行過濾垃圾郵件和病毒
Choose your IMAP email client settings for Gmail - Gmail Help
Don't save sent messages on the server. Sent messages are automatically copied to the Gmail/Sent folder if your email client uses SMTP. Save draft messages on the server if you want your drafts to show when you open Gmail on the web. Deleting. Don't save deleted messages on …
Set up an outbound gateway to process outgoing email
To require the client SMTP server to present a certificate signed by a Certificate Authority that is trusted by Google, check the Require CA signed certificate (Recommended) box. To verify the receiving host name matches the certificate presented by the SMTP server, check the Validate certificate hostname (Recommended) box.
TLS & SSL connections - Google Workspace Admin Help
Transport Layer Security (TLS) is a standard internet protocol that encrypts email for privacy and secure delivery.
Use TLS certificates for secure transport - Google Help
Outbound (MSA)—smtp.gmail.com Search for other ways to access TLS certificates To find other ways to access the certificates, search for extracting certificate from TLS server .
Email routing and delivery options for Google Workspace
Route non-Gmail email through Gmail servers with SMTP relay: If your organization uses a non-Gmail server, such as Microsoft or an SMTP service, you can set up the SMTP relay service to route outgoing email through Gmail. The SMTP relay service setting filters messages for spam and viruses before they reach external recipients.
Google IP address ranges for outbound mail servers
2021年1月25日 · When setting up email for your domain, you might need the IP addresses for Google Workspace mail servers. For example, SPF authentication for your domain might require Google server IP addresses.
Errores y códigos de SMTP de Gmail - Ayuda de Gmail - Google …
En su lugar, usa la retransmisión de SMTP de tu proveedor de servicios. Para obtener más información, consulta "La IP que usas para enviar correos electrónicos no está autorizada…". 550. 5.7.1. Se superó el límite diario de envío de retransmisión de SMTP para este cliente.