·553 sorry, you must authentication[2017-5-26]
·550 5.7.0 Local Policy Violation. check SPF[2017-5-26]
·550 ACL:RE Hit acl, permission deny[2017-5-26]
·550 Denied by policy[2017-5-26]
·554 5.7.1 This message has been blocked because ASE reports it as spam[2017-5-26]
·554 Content filter will not allow this message[2017-5-26]
·解决Postfix pop3d:Maximum connection limit reached[2017-5-2]
·550 Backend Replied [xxx.mxlogic.net]:Denied by policy (Mode: normal)[2017-4-23]
·550 Mail is rejected by recipients[2017-4-6]
·421 4.4.5 Service not available, too many connections, code=CL82[2017-4-6]
·Could not connect to on port 25 since this would mean connecting to myse[2017-4-6]
·550 5.7.1 message content rejected[2017-4-6]
·451 Failed to store message for[2017-4-6]
·554 5.7.1 Client host rejected: Access denied[2017-3-20]
·552 Sorry, your host is blocked by spam detection system[2017-3-7]
·SPF Permanent Error: Void lookup limit of 2 exceeded的解决方法[2017-3-4]
·554 mail server permanently rejected message (#5.3.0)[2017-2-20]