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Setelah melakukan konfigurasi mail server, berikut DKIM dan SPF sekarang waktunya untuk melakukan percobaan apakah mail server yang dibuat sudah benar? Caranya adalah dengan mengirim email kosong ke [email protected] tidak perlu mengisi subject, hanya email kosong, nanti anda akan menerima email dari [email protected]. kira-kira isinya seperti gambar dibawah

Hasil yang sangat penting ada dibagian atas email yang diterima

SPF check:          pass
DomainKeys check:   neutral
DKIM check:         pass
Sender-ID check:    pass
SpamAssassin check: ham

pastikan bahwa DomainKeys check anda statusnya paling tidak neutral agar bisa mengirim email ke luar dan bisa masuk ke inbox, dan pastikan IP mail server anda tidak diblacklist. Selain [email protected]. anda bisa mengirim email ke [email protected]

Setelah selesai mengkonfigurasi SMTP, POP3 atau IMAP adalah saatnya untuk melakukan testing terhadap protokol tersebut apakah berjalan dengan lancar atau tidak, semua perintah disini akan dijalakan melalui terminal. Di linux bila anda belum memiliki utility bernama telnet install terlebih dahulu
Fedora 17

su -c "yum install telnet -y"

1. Testing POP3

telnet jaranguda.com 110

hasil yang keluar bila POP3 sudah berjalan

Trying 173.245.5.172...
Connected to jaranguda.com.
Escape character is '^]'.
+OK Dovecot ready.

2. SMTP

telnet jaranguda.com 25

hasil yang keluar bila SMTP sudah berjalan

Trying 173.245.5.172...
Connected to jaranguda.com.
Escape character is '^]'.
220-dev.jaranguda.com ESMTP Exim 4.80 #2 Sun, 11 Nov 2012 20:42:07 +0700 
220-We do not authorize the use of this system to transport unsolicited, 
220 and/or bulk e-mail.

3. IMAP

telnet jaranguda.com 143

hasil yang keluar bila IMAP sudah berjalan

Trying 173.245.5.172...
Connected to jaranguda.com.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready.

4. SSL IMAP

openssl s_client -connect jaranguda.com:993

hasil yang keluar bila SSL IMAP sudah berjalan

CONNECTED(00000003)
depth=2 C = BE, O = GlobalSign nv-sa, OU = Root CA, CN = GlobalSign Root CA
verify return:1
depth=1 O = AlphaSSL, CN = AlphaSSL CA - G2
verify return:1
depth=0 OU = Domain Control Validated, CN = web.indoroot.com
verify return:1
---
Certificate chain
 0 s:/OU=Domain Control Validated/CN=web.indoroot.com
   i:/O=AlphaSSL/CN=AlphaSSL CA - G2
 1 s:/O=AlphaSSL/CN=AlphaSSL CA - G2
   i:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=/OU=Domain Control Validated/CN=web.indoroot.com
issuer=/O=AlphaSSL/CN=AlphaSSL CA - G2
---
No client certificate CA names sent
---
SSL handshake has read 3062 bytes and written 311 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: zlib compression
Expansion: zlib compression
SSL-Session:
    Protocol  : TLSv1
    Cipher    : DHE-RSA-AES256-SHA
    Session-ID: A88C50C6FAB22C259E6AC7AA7D07BBB64D63202D7C636F53B11A9F34B3BCD91C
    Session-ID-ctx: 
    Master-Key: 07378920C435632DF51FFF0F19F3F6AA661E50043218D96B9084CAA012DC831CB0B6E060C98988F00D3CB4FD8E6EF422
    Key-Arg   : None
    Krb5 Principal: None
    PSK identity: None
    PSK identity hint: None
    TLS session ticket:
    0000 - c3 39 73 0c 86 7d 84 92-ab 18 27 c5 76 74 72 be   .9s..}....'.vtr.
    0010 - b4 6f 4f 65 5f 5b 36 da-56 36 59 13 8d 29 8c 86   .oOe_[6.V6Y..)..
    0020 - 17 b9 2a 8e 28 11 a3 9c-a2 c2 f1 02 35 66 54 3b   ..*.(.......5fT;
    0030 - ef 24 61 c0 55 71 78 fb-98 8e c5 b6 fd cc fd 4a   .$a.Uqx........J
    0040 - ae 10 47 56 1b 10 94 b2-ea 9c 85 05 a2 ff ce d3   ..GV............
    0050 - fb b6 a7 23 44 51 4c 7f-97 a1 8a 14 95 3d 25 15   ...#DQL......=%.
    0060 - a1 b1 7b 02 4a ac e5 71-2a 48 c3 d0 09 32 30 cc   ..{.J..q*H...20.
    0070 - 66 13 2b ff be e3 0e ce-2c 7f ed 8b ef 29 c3 a3   f.+.....,....)..
    0080 - e0 04 9f 98 ab 29 51 2d-52 f3 5a 50 ad e3 5f 71   .....)Q-R.ZP.._q
    0090 - 1a ed b3 6a 8e 26 e5 00-de 3e 38 b6 11 47 1c f8   ...j.&...>8..G..
 
    Compression: 1 (zlib compression)
    Start Time: 1352642064
    Timeout   : 300 (sec)
    Verify return code: 0 (ok)
---
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready.

Cara Mudah Testing DKIM dan SPF dari Mail Server

Cara Testing SMTP POP3 dan IMAP dari Terminal