Which SMTP Port to Use for Email: 25, 587, 465, or 2525?
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Which SMTP Port to Use for Email: 25, 587, 465, or 2525?
SMTP-AUTH（SMTP認証）とメールの暗号化の概要を理解する
Fallback from the Submission port to the SMTP port
SMTP Ports: 25, 465, 587 and 2525. What SMTP Port Should I Use?
![TCP Source Port]](https://www.manual.sato-global.com/printer/clnxplus/images/GUID-CC50C560-01BB-4316-969D-1D43A3BB81D8-low.png "TCP Source Port]")
TCP Source Port]
Port 465 (ポート465) | PORT INDEX
