Postfix smtpd

220 ns34 ESMTP Postfix (Debian/GNU)
250-ns34
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 SMTPUTF8

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            b1:a6:ae:a9:04:7c:eb:1a
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: CN=ns34
        Validity
            Not Before: Jul 16 10:24:03 2018 GMT
            Not After : Jul 13 10:24:03 2028 GMT
        Subject: CN=ns34
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:ba:94:5c:fd:75:6e:68:b9:5d:be:95:6d:19:45:
                    5b:81:5a:2b:6e:cc:cd:73:31:f5:55:79:4c:5c:a9:
                    68:00:1f:98:0c:ab:3a:f9:3a:5e:75:d8:a4:23:43:
                    4f:8a:e9:f8:96:e0:70:ad:c9:f4:b3:e0:3e:5d:60:
                    70:ab:54:f6:f8:09:2c:5c:92:40:0f:23:fc:4a:56:
                    11:5f:7c:55:af:83:20:b6:4c:2f:66:ea:48:4c:a7:
                    f8:fa:80:5b:16:1b:74:b5:8d:9e:35:4c:07:83:7a:
                    b1:06:17:fb:40:bd:88:26:db:de:df:bd:b9:26:74:
                    f5:51:cc:20:52:c8:49:d2:64:2a:10:a0:48:a2:23:
                    c2:eb:20:28:0a:51:3c:31:83:09:ac:98:27:26:0a:
                    d9:fb:1d:f0:99:4f:5c:15:2a:a5:12:39:6b:d5:11:
                    98:58:de:82:dc:21:90:c3:c3:7e:bb:8d:ab:9c:74:
                    a8:ed:8d:ed:97:58:ae:f6:a7:66:2c:f3:ed:f7:0d:
                    b6:e5:3c:a0:37:44:78:6f:19:67:ea:7b:f9:db:ce:
                    0f:5c:18:1e:09:e2:c8:04:62:36:38:53:02:02:03:
                    2f:51:4f:e1:ac:7c:3d:98:84:3c:34:4e:c7:f7:e4:
                    a8:23:38:23:9c:e4:59:2f:a9:86:64:a7:34:ba:78:
                    aa:f9
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:FALSE
            X509v3 Subject Alternative Name: 
                DNS:ns34
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        7f:8d:00:54:11:cf:fe:d5:a6:07:88:06:19:4a:cb:f4:71:45:
        54:e5:55:ad:bc:3c:02:c4:72:e1:d9:4b:10:77:01:57:bd:a0:
        c2:97:ff:76:fe:12:a7:18:ea:63:ea:83:78:f6:68:ad:90:20:
        84:d0:c1:d2:7f:ce:9d:0b:78:b6:34:85:a0:89:17:bf:37:35:
        83:ea:d7:9f:49:2a:60:9a:cc:2d:31:60:97:32:15:f3:31:a3:
        ba:58:68:d0:f1:59:48:84:8b:d4:d6:c1:0a:76:d4:af:22:3e:
        97:ec:b4:6a:f8:11:8a:b4:5d:c8:b4:f1:23:ae:46:25:2d:62:
        da:b3:04:f0:b0:1b:dc:84:cf:c0:89:f8:8e:dc:79:09:50:8a:
        b1:6f:fb:ff:56:af:cd:24:12:dc:f4:39:9a:79:f3:f2:8c:27:
        84:b4:31:37:a9:63:78:15:0f:25:59:ad:27:a6:a3:49:c8:43:
        55:8e:d6:1b:62:85:f5:ac:c9:6f:9e:5e:cc:a3:31:b4:db:22:
        20:bb:b9:8b:d6:73:84:5a:0a:19:27:5a:6f:64:59:c0:5f:b0:
        e9:66:ba:b7:d0:29:dd:ea:1f:50:61:85:c8:40:03:06:9b:6a:
        19:9c:d5:48:59:70:e5:6c:7e:50:98:ff:da:dd:0c:ad:59:d9:
        54:da:5f:ee

unknown
Resolver name: ns34

unknown
Resolver name: ns34