Postfix smtpd

220 5z4fzz49v.tjz7ey5teq7mh1.com.br ESMTP Postfix (Ubuntu)
250-5z4fzz49v.tjz7ey5teq7mh1.com.br
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:
            2a:f7:bf:26:89:c5:be:fa:eb:f3:89:8d:a3:a7:bd:a7:88:11:9b:ff
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: CN=vps-7d6a796d.vps.ovh.ca
        Validity
            Not Before: Mar 11 04:39:58 2025 GMT
            Not After : Mar  9 04:39:58 2035 GMT
        Subject: CN=vps-7d6a796d.vps.ovh.ca
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:de:1b:da:cd:9c:9c:e0:58:6a:65:4d:b0:72:8a:
                    9d:eb:df:fa:f6:a0:79:bd:4d:c7:6f:2e:b9:cc:79:
                    5f:25:03:c4:5e:19:9b:fd:5e:b0:46:c1:52:44:65:
                    a3:6a:1f:7c:0e:b1:b1:90:7e:29:ea:c9:56:64:35:
                    4d:83:4e:ee:80:64:66:37:e7:94:92:c4:0c:be:a9:
                    8c:56:46:d1:e5:45:2f:74:69:c4:0a:a2:e7:b9:36:
                    92:ea:e2:5d:d3:e5:30:bc:12:d6:04:a7:9a:42:6d:
                    85:06:8c:78:80:d5:e0:b6:26:f2:55:a5:0d:30:fc:
                    c4:48:ec:44:f5:eb:c7:d9:f3:b8:a1:e5:62:cf:8f:
                    1d:85:9a:08:8f:28:9f:24:a0:9c:26:6c:7c:d3:05:
                    4e:04:42:7e:97:91:38:80:dc:e4:4f:45:b5:c5:16:
                    de:09:d3:8e:66:24:39:d6:5d:70:38:61:92:5a:57:
                    b8:b1:1a:6d:42:b3:dd:84:2a:68:b2:e1:ce:e8:ee:
                    52:4c:ad:15:a1:c3:f1:ce:80:74:87:b8:d6:d4:94:
                    79:5f:1f:6c:eb:0e:61:7f:fe:04:9c:ee:de:07:51:
                    d7:33:61:eb:88:54:e8:d3:28:d2:c1:29:d8:3d:b9:
                    d3:59:f4:0d:14:bc:55:8f:27:20:8a:72:4e:66:12:
                    01:2f
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:FALSE
            X509v3 Subject Alternative Name: 
                DNS:vps-7d6a796d.vps.ovh.ca
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        46:2a:4f:0a:8e:25:1f:de:40:d1:56:db:0a:4a:7d:1d:eb:91:
        81:93:da:e2:e4:aa:52:34:8c:67:bd:8f:20:7b:0d:c0:71:19:
        12:88:cb:05:98:5b:95:df:c6:f9:e1:54:94:bf:c3:b1:84:c9:
        69:9d:38:0c:f4:f7:37:a5:f2:50:84:e5:2c:4e:90:f4:c0:52:
        73:9f:d3:3e:0e:8a:b3:03:99:bc:ad:9d:12:83:66:3f:91:a6:
        37:d5:dd:77:f5:ef:af:96:89:dc:e2:3e:71:70:9f:fe:03:a3:
        49:6c:18:53:78:57:5d:06:32:26:08:aa:c0:7f:06:41:a7:f4:
        1d:f2:95:a6:77:40:82:90:d2:22:e2:3e:92:47:71:14:64:d4:
        e3:08:c7:22:9e:b0:6b:93:ce:6b:3c:67:27:36:6c:b1:0e:af:
        74:e6:80:c3:10:4a:d6:7f:5f:b3:6f:db:87:f9:7c:75:0e:41:
        7e:ae:fb:9b:32:71:33:30:18:e2:3f:ca:72:28:f2:67:33:a4:
        61:61:c6:e5:3c:7a:07:4b:a3:70:12:5a:60:eb:e6:13:e8:5d:
        0f:c3:66:3d:3c:ac:28:2d:f5:c5:1a:c8:de:d4:d7:91:e8:7c:
        f1:bb:bc:93:0f:e3:a7:0a:32:06:74:28:bd:1c:1b:f1:49:f2:
        3c:e4:36:49