NAWALA Block Yahoo Email MX

Hari ini saya menerima laporan dari teman saya bahwa server emailnya tidak bisa mengirim email ke Yahoo (yang di coba yahoo.com, yang top level domain atau country level domain seperti yahoo.co.id, belum dicoba)  sementara ke email server tujuan lain misalnya gmail, dan lain-lain normal.

Awalnya saya curiga kalau IPnya kena blacklist, tetapi ternyata tidak. Kemudian saya lakukan testing manual dengan pengecekan best practice untuk troubleshoot email server:

1. Cek MX record Yahoo:
root@server2 [~]# host -t mx yahoo.com
yahoo.com mail is handled by 1 mta7.am0.yahoodns.net.
yahoo.com mail is handled by 1 mta5.am0.yahoodns.net.
yahoo.com mail is handled by 1 mta6.am0.yahoodns.net.
2. Cek IP MX yang di dapat:
root@server2 [~]# host mta7.am0.yahoodns.net. 180.131.144.144
Using domain server:
Name: 180.131.144.144
Address: 180.131.144.144#53
Aliases:
mta7.am0.yahoodns.net has address 127.0.0.1
root@server2 [~]# host mta5.am0.yahoodns.net. 180.131.144.144
Using domain server:
Name: 180.131.144.144
Address: 180.131.144.144#53
Aliases:
mta5.am0.yahoodns.net has address 127.0.0.1

 

ternyata menggunakan DNS Nawala, MX record Yahoo dialihkan ke IP 127.0.0.1 (localhost), sementara kalau menggunakan DNS lain:

root@server2 [~]# host -t mx yahoo.com
yahoo.com mail is handled by 1 mta7.am0.yahoodns.net.
yahoo.com mail is handled by 1 mta5.am0.yahoodns.net.
yahoo.com mail is handled by 1 mta6.am0.yahoodns.net.
root@server2 [~]# host mta7.am0.yahoodns.net.
mta7.am0.yahoodns.net has address 98.138.112.34
mta7.am0.yahoodns.net has address 98.138.112.38
mta7.am0.yahoodns.net has address 63.250.192.45
mta7.am0.yahoodns.net has address 63.250.192.46
mta7.am0.yahoodns.net has address 66.196.118.36
mta7.am0.yahoodns.net has address 66.196.118.240
mta7.am0.yahoodns.net has address 98.136.216.26
mta7.am0.yahoodns.net has address 98.138.112.32

Jadi NAWALA melakukan blocking terhadap host record MX yahoo.

 

Kemudian, saya coba laporkan ke nawala melalui situs mereka malah ada error kalau penjelasannya terlalu panjang (hasil pengecekan MX record dan DNS look up).

pelaporan-nawala-dibatasin

Bagi teman-teman admin khususnya yang mengelola email server dan menggunakan DNS Nawala sebagai resolver di email server mereka, harap dilakukan crosscheck.

 

Semoga bermanfaat

About Kalpin Erlangga Silaen

My name is Kalpin Erlangga Silaen, black eyes, black hair with good smiles
This entry was posted in IT, SysAdmin. Bookmark the permalink.

One Response to NAWALA Block Yahoo Email MX

  1. gospirus says:

    makasi um infonya
    kemarin ane nyoba juga, ngirim email ke email@yahoo.co.id
    pas ane cek email@yahoo.co.id yg dimaksud, ane ga nerima emailnya.
    ane send email dari gmail padahal.

    kemudian itu email ane ulang kirim tp ga ke @yahoo.co.id melainkan ke mail@yahoo.com
    eh malah email tuh masuk

    solusinya gimana itu ya,
    kenapa email yg ane daftar @yahoo.co.id ga bisa nerima email, malah beralih ke @yahoo.com

    Hmm..?

Leave a Reply

Your email address will not be published. Required fields are marked *