Whenever anyone emails a Yahoo Groups listserv via my Exim server, Yahoo Groups responds with the following: "This message has been blocked as it is suspected to contain malware".
Repeated attempts to contact Yahoo have resulted in the unenlightening response, "Your problem, not ours." I am using Exim 4.88 on a Gentoo Linux server. I have taken the following steps to try and identify the issue: 1) Telnet to Yahoo Groups and send a message manually. The message goes through without issue, which implies that Yahoo Groups has not blocked my IP or the email addresses impacted. 2) Send a test message from Exim to a Yahoo Group using "exim -v [email protected]". The message goes through without issue, which implies it is not a basic configuration issue for exim. 3) Send a test message via Exim via a telnet session to a Yahoo Group. It works without issue, which seems to imply that the email client is at fault. 4) Send a test message from a Desktop or phone email client to a Yahoo Group. The message is blocked and cited to be malware. Refine test by trying a different computer, different email address, and a different Yahoo Group, but same client -- message is blocked as malware. Refine test by trying a different computer, different OS, different email address, different Yahoo Group, and different email client -- message is blocked as malware. This seems to imply that it is exim at fault, but it is not clear how. Since all messages sent via a mail client are being blacked as malware by Yahoo Groups, it seems to imply that there is a greater problem, but it is not clear at all what is going on. Any tips on next steps to debug this issue and remedy it? Thank you, Jay -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
