问题
“可能交付”功能有什么作用?
答案
启用“可能传送”功能后,如果任何邮件在邮件正文传送后超时,但在收件人主机确认收到邮件之前,AsyncOS会将其视为“可能传送”。 此功能可防止收件人在其收件人主机出现持续错误而导致收到确认消息时,接收人接收邮件的多个副本。AsyncOS在邮件日志中将此收件人记录为可能的传送,并将邮件计为已完成。
myesa.local> deliveryconfig
Default interface to deliver mail: Auto
"Possible Delivery": Enabled
Default system wide maximum outbound message delivery
concurrency: 10000
Default system wide TLS maximum outbound message delivery
concurrency: 100
Choose the operation you want to perform:
- SETUP - Configure mail delivery.
[]> setup
Choose the default interface to deliver mail.
1. Auto
2. Management (192.168.0.199/24: myesa.local)
[1]>
Enable "Possible Delivery" (recommended)? [Y]>
Please enter the default system wide maximum outbound message
delivery concurrency.
[10000]>
Please enter the default system wide TLS maximum outbound message
delivery concurrency.
[100]>
超时是TCP超时,通常为5分钟。SMTP将在4分钟前超时。
如果禁用此功能,邮件安全设备(ESA)将尝试重新发送邮件。如果启用此功能,则消息被视为已传送。