It appears that Murray S. Kucherawy <[email protected]> said: >> * Section 2.6.2 requires gzip. What about other methods like zstd which >> can provide better compression? >> >> This is the first time that has been asked. I suppose it could be >> changed, though, it seems as though it would break existing report >> ingestion. Are zipped reports large enough to benefit?
Early reports used the old ZIP (as in winzip and pkzip) format before I registered application/gzip in 2012 and we switched to gzip in RFC 7489. Nonetheless I am still getting reports in ZIP format every day including all of Google's so let's not further confuse the issue. As to whether compression is worth it, yes, definitely. A recent report I got from Microsoft has a 4K gzip attachment which expands to 226K of XML and a 67K zip from Google that expands to 1.9M of XML. There is a lot of repetitive text in XML so gzip's and ZIP's string compression works well and I doubt that another more clever format would do much better. R's, John _______________________________________________ dmarc mailing list -- [email protected] To unsubscribe send an email to [email protected]
