I get the same thing, after nearly every email I send directly to the lucene/solr lists (as opposed to auto-sent JIRA posts).
I don't think it delays my messages though. Steve -----Original Message----- From: Ahmet Arslan [mailto:iori...@yahoo.com] Sent: Wednesday, September 12, 2012 1:24 PM To: solr-user@lucene.apache.org Subject: failure notice from zju.edu.cn Hello All, Sometimes (in a random manner) I get the following when I reply a post : "Hi. This is the deliver program at zju.edu.cn. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. new...@zju.edu.cn reject mail " David asked this question before : http://search-lucene.com/m/mlfOKh7WXn/ But I always use plain text e-mails. Can anybody explain what this mailer-dae...@zju.edu.cn or new...@zju.edu.cn thing is? Are they subscribers of solr-user Mailing List? How can I prevent this? This seems delaying my mails appearing on ML. Thanks, Ahmet