Oct 22 06:54:31 mail postfix/postscreen[1845508]: NOQUEUE: reject: RCPT from [45.10.175.109]:53128: 550 5.7.1 Service unavailable; client [45.10.175.109] blocked using zen.spamhaus.org; from=<[email protected]>, to=<3cfran ...
show moreOct 22 06:54:31 mail postfix/postscreen[1845508]: NOQUEUE: reject: RCPT from [45.10.175.109]:53128: 550 5.7.1 Service unavailable; client [45.10.175.109] blocked using zen.spamhaus.org; from=<[email protected]>, to=<[email protected]>, proto=ESMTP, helo=<mail.oeisynx.cn>
Oct 22 06:54:32 mail postfix/postscreen[1845508]: NOQUEUE: reject: RCPT from [45.10.175.109]:53128: 550 5.7.1 Service unavailable; client [45.10.175.109] blocked using zen.spamhaus.org; from=<[email protected]>, to=<[email protected]>, proto=ESMTP, helo=<mail.oeisynx.cn>
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Probed a non-existent mailbox on 10/9 (rejected), then came back on 10/12 while listed on Spamhaus and was rejected again. Another IP in the same /24 probed a different non-existent mailbox the same day. Consistent with a coordinated directory harves ...
show moreProbed a non-existent mailbox on 10/9 (rejected), then came back on 10/12 while listed on Spamhaus and was rejected again. Another IP in the same /24 probed a different non-existent mailbox the same day. Consistent with a coordinated directory harvest campaign.
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Delivered unsolicited bulk email to this server. The messages were classified as spam by our content filter. Observed 1 such message(s) on 1 separate day(s); highest filter score 16 against a threshold of 5. At the time of delivery the sending host w ...
show moreDelivered unsolicited bulk email to this server. The messages were classified as spam by our content filter. Observed 1 such message(s) on 1 separate day(s); highest filter score 16 against a threshold of 5. At the time of delivery the sending host was listed on public blocklists (RCVD_IN_PBL, RCVD_IN_SBL_CSS).
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