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·554 front04.ibpmail.net Service not available - from blacklisted IP address[2016-6-28]
·550 5.7.0 Message Size Violation[2016-6-28]
·550 5.7.1 Error: content rejected[2016-6-28]
·554 5.7.1 You are not allowed to connect[2016-6-28]
·554 Your access to this mail system has been rejected due to the sending MTAs po[2016-6-28]
·554 rejecting banned content[2016-6-22]
·552 5.3.4 Error: message file too big from[2016-6-22]
·553 MAIL FROM not matches the address of FROM field in message header[2016-6-22]
·451 4.4.4 Temporary server error. Please try again later ATTR4[2016-6-22]
·421-4.7.0 Our system has detected that this message is suspicious due to the nat[2016-6-21]
·552 sorry, that message size exceeds my databytes limit[2016-6-20]
·552 bounce 1 recips: Backend Replied[2016-6-20]
·550 Mail is rejected by recipients[2016-6-20]
·554 mail server permanently rejected message[2016-6-20]
·550 5.1.1 Error: invalid recipients is found from[2016-6-17]
·553 5.3.0 alph154 DNSBL:ATTRBL 521[2016-6-16]
·554 5.7.1 The message from with the subject of matches a profile the Internet co[2016-6-16]
·550 Requested action not taken: mail is rejected[2016-6-16]
·550 mailbox rejected[2016-6-16]
·554 5.7.1 Recipient address rejected: disk quota of recipient is full![2016-6-8]
·553 refused, the IP is listed in spamhaus.org(SPAMHAUS BLOCKLIST ADDRESS IS WRON[2016-6-7]
·554 5.2.0 3mH71t02B1KP63P01mHAge Spam content found[2016-6-7]
·554 5.7.1 DAS41 Your mail is blocked automatically by anti-spam system. (E04)[2016-6-7]
·554 A.16 scb7@dgkfn.com... in user's email,domain blacklist(Header From)[2016-6-5]
·421 connection limit exceeded[2016-6-1]
·554 5.5.1 Error: no valid recipients[2016-6-1]
·598 ip address in blacklist for more details Please see[2016-6-1]
·553 #5.1.8 Domain of sender address does not exist[2016-5-31]
·550 The domain sg-international.com is currently suspended. Try later.[2016-5-31]
·554 Service unavailable; Client host blocked by dnsbl.ahbl.org[2016-5-31]
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