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DMARCIAN: Increasing DMARC Aggregate Reports in Cisco ESA
- July 27, 2023
- Posted by: Top Deliverability
- Category: DMARC DMARCIAN Email Authentication Email Services Industry News
DMARCIAN just shared a new insightful write-up:
Though Cisco email security appliances (ESA) can be configured to send DMARC aggregate (RUA) reports, they have a limited number of daily DMARC reports they provide. This limit can be easily reached by organizations sending large volumes of email, especially if multiple subdomains are seen in the From header of messages received. The number of subdomains seen is an issue because of a deficiency in how the Cisco IronPort system generates DMARC reports. Instead of creating a single XML report containing data for the top-level domain and any subdomains (e.g. example.com along with www.example.com, server.example.com, etc), each server instance generates a completely separate report for each—this causes the limit to be reached rapidly. Increasing the daily limit will ensure that you have the proper visibility and are helping other organizations with their DMARC projects. The daily DMARC report default setting is 1000, which can be increased only through the command-line
Continued here: Increasing DMARC Aggregate Reports in Cisco ESA
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