Some of my users have been reporting that eMail messages are getting lost intermittently when they're sent to users at any internet domain name that relies on OUTLOOK.COM for its MX.
Our mail server logs confirm that all outbound messages were accepted to those MX's (except for mistyped addresses or when a user's quota is exhausted, in which case the usual SMTP rejections occur). No bounces were received. Users have also reported the same intermittent problems when sending from other providers (including GMail, YahooMail, etc.). No bounces were received (as far as I know). We signed up for Microsoft's SNDS over a year ago, and added the IPv4 addresses of our mail servers (unfortunately IPv6 is still not supported, so more than 50% of our outbound SMTP connections won't be included in whatever statistics are supposed to be provided by SNDS). After logging in, the "View Data" section indicates the following: No data for specified IPs on this date In the past we were able to download a few CSV reports using the links in the "Automated Data Access" section, but now they're only presenting empty files (0 bytes). Does anyone know if this just a temporary problem with SNDS that occurs from time-to-time, or is there something more that we need to do to get meaningful results from SNDS? (The ChatGPT AI support bots have not been helpful.) Thanks. -- Postmaster - postmas...@inter-corporate.com Randolf Richardson - rand...@inter-corporate.com Inter-Corporate Computer & Network Services, Inc. Vancouver, British Columbia, Canada https://www.inter-corporate.com/ _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop