callback verification造句

例句与造句

1. Callback verification can be compliant with SMTP RFCs, but it has various drawbacks.
2. One of the ways of reducing the load on innocent servers is to use other spam detection methods first and save callback verification for last.
3. Thus many mail servers use other techniques and check the mailbox existence against relevant systems such as the Domain Name System for the domain or using callback verification to check if the mailbox exists.
4. More than a decade later spammers typically forge working " reverse paths ", many MTAs reject mail if callback verification or other plausibility checks fail for the " reverse path ".
5. It's difficult to find callback verification in a sentence. 用callback verification造句挺难的