Postfix smtpd

220 vmi2233760.contaboserver.net ESMTP Postfix (Ubuntu)
250-vmi2233760.contaboserver.net
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            0d:12:56:1d:f7:e2:18:1e:f4:be:58:dc:14:e8:e4:97:2d:64:ba:1f
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: CN=vmi2233760.contaboserver.net
        Validity
            Not Before: Nov  2 16:07:06 2024 GMT
            Not After : Oct 31 16:07:06 2034 GMT
        Subject: CN=vmi2233760.contaboserver.net
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:a2:00:19:9b:42:80:f0:44:c3:06:19:95:5b:74:
                    9f:33:d2:2e:e3:98:ea:c6:60:0b:15:35:39:d8:aa:
                    98:e6:13:b6:c6:3f:8f:61:35:fe:47:1a:19:75:98:
                    11:fe:11:5a:3a:46:cf:22:21:9e:17:12:b1:f7:2b:
                    7a:bc:42:72:71:2e:43:b3:4d:1d:70:9c:0d:87:bc:
                    23:95:c0:80:91:fe:81:11:16:2a:9b:eb:c1:86:df:
                    0d:56:c0:02:8b:7f:ea:76:bd:21:cf:72:0c:81:58:
                    01:9f:80:20:ff:7b:49:5e:9e:6d:51:aa:24:c0:6e:
                    0b:9d:e0:2a:01:b0:ef:a5:19:2b:10:50:1b:52:67:
                    0b:85:34:86:db:f2:07:ed:3d:c9:5b:9d:68:32:14:
                    c5:26:2c:e3:f8:27:83:da:20:b7:d1:9a:2e:e7:64:
                    91:dd:bb:9a:e1:49:12:17:11:21:6b:24:5b:a8:e9:
                    c8:95:12:5d:95:24:43:da:45:c7:94:5c:97:95:08:
                    05:06:01:ed:f3:eb:5e:b7:54:b6:0b:19:c7:73:d5:
                    fc:86:4c:52:78:81:ee:d2:92:65:c2:3a:53:2e:28:
                    d4:ea:52:59:e1:b7:45:76:49:44:45:3c:84:de:db:
                    eb:8f:b2:d5:44:73:39:32:83:37:79:6a:51:5d:ea:
                    c6:bf
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:FALSE
            X509v3 Subject Alternative Name: 
                DNS:vmi2233760.contaboserver.net
            X509v3 Subject Key Identifier: 
                B4:61:00:56:A5:19:79:17:F2:36:57:E1:26:1B:ED:38:9D:78:8F:A7
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        66:f5:b8:0e:23:54:c3:98:ae:46:9a:a5:1c:9e:57:2e:18:32:
        61:3e:f1:64:a1:79:b5:36:e3:e9:56:84:07:0e:e8:79:67:ce:
        a2:a3:6a:db:44:38:04:b1:0d:5f:8b:22:e7:1e:64:d5:24:b6:
        14:39:fb:16:53:5e:51:cc:44:58:21:75:1c:e8:9e:ab:80:f7:
        94:7d:aa:53:49:e1:5b:ab:b6:72:9e:e7:34:51:15:f2:cb:5d:
        46:da:b7:db:47:8d:be:15:ee:31:86:32:c8:9b:8f:0c:7f:07:
        d5:1f:16:69:1f:fd:29:f1:1e:b1:90:3f:51:e5:c8:1a:5f:77:
        9c:26:2c:62:d6:84:12:aa:c2:0e:de:14:2f:8f:38:bc:0d:25:
        90:8c:5d:b4:41:45:12:cb:5c:08:4b:fa:fb:80:1e:da:8c:b6:
        1f:7a:e9:00:a6:7c:7c:ec:de:63:ca:cd:2a:eb:6a:32:bd:56:
        1f:3e:7d:db:a0:f6:33:35:0d:52:59:35:8b:a6:e0:13:0d:c0:
        81:49:2e:ec:36:02:b7:04:32:39:2d:65:a2:76:e2:4e:f7:c7:
        a8:1f:ec:20:79:92:b0:70:5c:63:1d:29:f0:a4:c8:ff:1e:0e:
        ca:dd:a5:c7:ba:86:14:42:e8:ce:aa:c6:0e:a5:78:a3:b6:74:
        32:17:9a:30