The mailbox port number is: sending port: 25 receiving port: 1 10. In addition, please open outlook, and click Tools-Account-Select Account in Sina-Properties-Advanced to uncheck the option "This server needs a secure link (SSL)". Also, when you "test account settings" in OUTLOOK, you can test your account by writing an email to yourself instead of using the test method provided by the system.

139 mailbox is a new generation of telecom-level quality of service e-mail service provided by China Mobile. It is a free e-mail with a mobile phone number suffix of @ 139.com. After opening the 139 mailbox service, mobile users can download the139 mailbox network disk client to use the service. The client of 139 e-mail network disk will automatically generate a virtual disk letter (139 e-mail network disk) on the computer, and the user can upload and back up as a local hard disk.