Postfix smtpd

220 mail.progressmm.com ESMTP Postfix (Debian/GNU)
250-mail.progressmm.com
250-PIPELINING
250-SIZE
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250-SMTPUTF8
250 CHUNKING

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            03:4c:5e:27:b6:77:cf:aa:99:a4:51:2b:40:7e:d9:3e:47:84:aa:43
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: CN=relay-01-puppet.smartmailtools.com
        Validity
            Not Before: Jan 22 15:21:01 2025 GMT
            Not After : Jan 20 15:21:01 2035 GMT
        Subject: CN=relay-01-puppet.smartmailtools.com
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:c3:6c:b3:b5:2f:62:5c:b8:e5:8f:cf:a9:cf:17:
                    d8:5b:1f:1c:d3:8d:1d:01:61:98:8d:27:c9:13:11:
                    2f:d5:4b:b6:41:95:35:69:87:e3:8c:4a:d4:c7:08:
                    6d:e9:82:1a:14:94:ad:42:32:71:50:11:a7:c5:69:
                    94:7e:97:81:b6:2c:8b:fb:80:87:d3:a8:fb:1d:27:
                    ce:63:b1:9a:72:96:b5:9e:9e:ee:97:f3:af:6a:86:
                    7b:6f:c4:58:a0:9e:56:fd:6c:5c:81:e0:47:04:d9:
                    05:93:b6:6d:8a:d4:90:b1:46:ec:37:20:22:4e:e0:
                    88:3e:2b:84:c2:97:ec:d3:cb:32:50:d8:d8:a2:19:
                    69:31:a3:85:2c:6e:16:8b:3e:c3:cf:82:66:da:b8:
                    cf:e8:ba:98:fa:bf:8a:d8:03:50:c9:dc:08:11:14:
                    f5:e0:4c:ba:a2:cc:89:b9:a9:7e:b8:8b:00:46:cc:
                    34:be:7f:5e:f4:07:68:4c:ee:b3:8c:80:d2:a9:9a:
                    65:28:24:62:8b:f4:11:a8:cf:f1:6e:93:b4:dc:6c:
                    b0:4d:51:2b:8a:08:a9:d4:13:56:e5:fe:1a:83:c3:
                    88:1c:bb:82:b8:fc:35:13:18:61:19:29:03:00:ad:
                    6b:ae:b1:c3:9f:27:e2:4f:de:a8:11:3f:a3:9d:06:
                    6f:07
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:FALSE
            X509v3 Subject Alternative Name: 
                DNS:relay-01-puppet.smartmailtools.com
            X509v3 Subject Key Identifier: 
                FD:0C:34:60:C0:2C:82:EA:EF:CD:00:BA:CF:ED:AE:0C:25:38:C6:11
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        99:cd:b2:26:ed:8a:9b:6b:d4:61:c4:40:25:a1:80:0c:3e:e9:
        eb:b9:0c:f6:c0:0f:e4:5b:b4:3e:bf:48:07:28:55:b5:e7:8b:
        be:64:a2:55:46:bf:36:e5:a1:6a:67:36:c5:cd:5e:ed:51:07:
        ea:57:2f:49:c0:39:d7:40:db:27:f6:70:06:de:a4:0d:52:40:
        40:02:13:57:93:4a:1d:d7:a0:a9:24:d7:9d:26:2a:03:61:54:
        0e:de:ff:e8:84:8e:b7:e9:bd:13:7e:83:e2:f2:6f:c5:58:4f:
        76:e0:88:fb:9d:61:f0:91:f8:b6:49:aa:30:48:91:d9:c7:58:
        fb:37:84:9c:d7:8e:2a:97:5b:48:ab:a6:00:b2:1b:ff:0f:38:
        2c:8d:d7:14:85:2a:98:0f:bc:c5:85:58:fe:b3:3f:8e:bf:91:
        4d:73:96:7d:db:b5:57:db:b4:23:f0:34:88:ec:d5:3d:9a:74:
        51:78:de:f1:93:fe:3b:42:54:5a:1e:f5:de:b5:7b:fc:2b:8b:
        0d:41:67:26:1b:97:13:05:37:49:d8:90:24:ab:c0:68:83:1f:
        33:db:d2:92:0d:ad:cd:0e:ec:0d:10:c2:9e:25:ce:92:69:f6:
        b6:23:76:14:8e:8e:f2:06:db:d5:c3:cd:a4:54:9c:86:22:33:
        e8:9e:c8:92