Hi I just install an E2k16 server on my current e2k10 organization, Mail flow from e2k10 to e2k16 fails but works on the other way(e2k16 to e2k10), I get this error from the receive connector log on e2k6:TLS negotiation failed with error AlgorithmMismatch.
018-09-10T23:58:25.827Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,1,192.168.192.210:25,192.168.192.163:57170,>,"220 E2k16SRV.contoso.com Microsoft ESMTP MAIL Service ready at Mon, 10 Sep 2018 17:58:25 -0600",2018-09-10T23:58:25.827Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,2,192.168.192.210:25,192.168.192.163:57170,<,EHLO E2k10SRV.contoso.com,
2018-09-10T23:58:25.827Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,3,192.168.192.210:25,192.168.192.163:57170,>,250 E2k16SRV.contoso.com Hello [192.168.192.163] SIZE 37748736 PIPELINING DSN ENHANCEDSTATUSCODES STARTTLS X-ANONYMOUSTLS AUTH NTLM X-EXPS GSSAPI NTLM 8BITMIME BINARYMIME CHUNKING XRDST,
2018-09-10T23:58:25.828Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,4,192.168.192.210:25,192.168.192.163:57170,<,X-ANONYMOUSTLS,
2018-09-10T23:58:25.828Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,5,192.168.192.210:25,192.168.192.163:57170,>,220 2.0.0 SMTP server ready,
2018-09-10T23:58:25.828Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,6,192.168.192.210:25,192.168.192.163:57170,*, CN=E2k16SRV CN=E2k16SRV 788B4ACD32E40E9142CC215E91B89247 A5F065E6F7F0537B680EEB2442B234BAE94A1885 2018-09-08T20:52:03.000Z 2023-09-08T20:52:03.000Z E2k16SRV;E2k16SRV.contoso.com,Sending certificate Subject Issuer name Serial number Thumbprint Not before Not after Subject alternate names
2018-09-10T23:58:25.829Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,7,192.168.192.210:25,192.168.192.163:57170,*,,TLS negotiation failed with error AlgorithmMismatch
2018-09-10T23:58:25.830Z,E2k16SRV\Default Frontend E2k16SRV,08D616BC9D84D342,8,192.168.192.210:25,192.168.192.163:57170,-,,Local
MCITP MCTS