Yandex

Yandex is a search engine and email provider, headquartered in Moscow. They have strict published requirements for delivering mail, such as details on the opt-in and unsubscribe process. They used to maintain a detailed postmaster tools site, but it was discontinued due to abuse of the service.

Domain

  • yandex.com
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421All 421 codes →

smtp;421 4.4.2 mail.yandex.net Error: timeout exceeded

450All 450 codes →

smtp;450 4.2.1 The recipient has exceeded message rate limit. Try again later.

Medium severity

451All 451 codes →

smtp;451 4.7.1 Sorry, the service is currently unavailable. Please come back later.

550All 550 codes →

smtp;550 5.7.1 Policy rejection on the target address

smtp;550 5.7.1 No such user!

551All 551 codes →

smtp;551 5.3.0 Unknown error

552All 552 codes →

smtp;552 5.2.2 Mailbox size limit exceeded

554All 554 codes →

smtp;554 5.7.1 [1] Message rejected under suspicion of SPAM; https://ya.cc/1IrBc ##

High severity

Other email providers

Built with

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