On Wed, Jan 09, 2019 at 07:51:11AM +0000, Yang, Shunyong wrote:> Hi, Vinod,> Thanks for your information. I will check with our IT.> Shunyong.The usual answer is generally over-enthuastic application of anti-SPAMtechniques, especially DMARC, which is fundamentally mailing-list hostile.Cheers, - Ted