邮件退信错误 #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
Aweekago,oneofourcustomershadacorruptemailaccount.NowtheyareusingMSExchange2010,buttheymigratedtothissolutionacoupleofmonthsagofromMSExchange2003.Tofixthecorruptedmailboxissue,werecommendedthemtoexpor