You two broke threading on this for what looks like non-trivial reasons. Threading is becoming very important to us with the mbox tools, so it's important to get right. The original problem is that the first message id is illegal under RFC 2822: > Message-Id: <20200317091212.GA18241@harshini.x.shetty@xxxxxxxx> You can't have two @ signs in a Message-id. However, your emailer completely made up the in-repy-to id which should quote the original message id: > References: <5e70da92.1c69fb81.c30ac.5d5cSMTPIN_ADDED_BROKEN@xxxxxxxxxxxxx> > In-Reply-To: <5e70da92.1c69fb81.c30ac.5d5cSMTPIN_ADDED_BROKEN@xxxxxxxxxxxxx> Which is why threading broke. Can you both try to fix this? The google problem looks to be atypical because if I look at any other mailer behaviour it will simply quote a message-id back in the In-Reply-To without checking for legality. James -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
