- SMTP error, RCPT TO: 550 5.7.1 Recipient not authorized, your IP has been found on a block list2013-11-28
- SMTP error, DOT: 554 5.7.1 Mail (71553-01035) appears to be unsolicited - REASON - send error reports to helpdesk@imagine.co.za2013-11-28
- Dynamic and Freemail Domain2013-11-28
- SMTP error, DOT: 571 Delivery not authorized, message refused2013-11-28
- DOT: 554 email rejected due to security policies - MCSpamSignature.sa.41.52013-11-28
- 550 Administrative prohibition2013-11-28
- Delivery to the following recipient failed permanently: abc@yourdomain.com2013-11-28
- 550 rejected by spamfilter2013-11-28
- 554 Message blocked by spamfilter2013-11-28
- SMTP error, RCPT TO: 550 rc:bl access denied2013-11-28
- SMTP error, DOT: 554 Mail appears to be unsolicited -- send error reports to spamadmin@gw.tander.ru2013-11-28
- 554-Transaction rejected (id=4ECC64CB110C0006) 554-Please provide the above transaction id and email details to 554 your mail administrator for more information2013-11-28
- SMTP error, DOT: 554 Your email was rejected because it contains the XF.Sic.E virus2013-11-28
- SMTP error, DOT: 554 sorry, Spam detected by SpamAssassin (#5.3.4)2013-11-28
- SMTP error, DOT: 552-5.7.0 Our system detected an illegal attachment on your message2013-11-28
- Message blocked by BOX Solutions (www.box-sol.com) SpamTrap Technology, please contact the CPTT site manager for help: (pAA1SQMj001501 ctlusr8012)2013-11-28
- 64.12.138.161 found in bad ip cache、http://postmaster.info.aol.com/errors/421dynt1.html2013-11-28
- 550 Your message was rejected because it appears to be part of a spam bomb2013-11-28