Yandex troubleshooting support information

Yandex has a robust postmaster website that gives you statistics about your domain and sending address including messages read, unread, deleted and inbox placement (signup required). It also provides detailed statistics concerning average reading time and when the most people read your messages so you can optimize send time and frequency. These statistics are a great help when troubleshooting deliverability issues at Yandex. 

  • Ensure you are following all mandatory sending requirements as posted on their troubleshooting web page.
  • Review the Yandex postmaster website for insightful statistics about your email program. Check to see if you are receiving a high number of complaints and if your subscribers are engaging with your campaigns. Adjust your email program as needed to lower complaint rates and increase engagement.
  • Review your SMTP log files for error codes regarding the delivery issues experienced.
  • Ensure all of your IP addresses are signed up with the Yandex complaint feedback loop.
    • Yandex heavily redacts personal identifiable information from complaint messages sent back to you through the feedback loop, so it can't be used to suppress individual subscribers that complain.
    • You can use the complaint information, along with their sender statistics program, to identify complaint trends with your email program. Look at possible complaint factors related to consent, send frequency, date and time, and list segmentation.
  • Scan your hosting and sending systems to ensure you are not sending viruses or malware to Yandex users.
  • Run your content through Inbox Preview to help identify HTML errors and to ensure your content renders properly in both desktop and mobile email clients. Design elements and wording in your content that are similar to known spam messages influences the Yandex spam filter. You want to be sure your content is designed with engagement in mind.
  • Ensure Sender Policy Framework (SPF); DomainKeys Identified Mail (DKIM); and Domain-based Authentication, Reporting and Conformance (DMARC) are all passing verification and working properly. Check the Authentication-Results: headers for both Yandex and Gmail and look for spf=pass, dkim=pass and dmarc=pass. If you don’t see “pass”, you need to troubleshoot and fix the cause of the failed verification. Also check multiple campaigns to ensure that any failed verification was not a one-time event.
    • For SPF, ensure you are using ~all or -all in the DNS record. Records using +all will likely be placed in the spam folder.
  • Check your Certification dashboard or Daily Performance Report (DPR) to ensure your IP address or domain has not been suspended if you are a member of Return Path’s Certification program.
  • Check if your IP address is listed on the following blacklists. Investigate and fix any issues if your IP addresses are listed.
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