On 10/3/2014 2:57 PM, Syafril Hermansyah wrote:
On 2014-10-03 14:42, Yudis wrote:
Mohon bantuannya menganalisa log dibawah ini :
Fri 2014-10-03 14:27:30: [446661] <-- 550-Callback setup failed while verifying
<[email protected]>
Fri 2014-10-03 14:27:30: [446661] <-- 550-Called: 113.11.130.172
Fri 2014-10-03 14:27:30: [446661] <-- 550-Sent: MAIL FROM:<>
Fri 2014-10-03 14:27:30: [446661] <-- 550-Response: 501 Domain must resolve
Fri 2014-10-03 14:27:30: [446661] <-- 550-The initial connection, or a HELO or MAIL
FROM:<> command was
Fri 2014-10-03 14:27:30: [446661] <-- 550-rejected. Refusing MAIL FROM:<> does
not help fight spam, disregards
Fri 2014-10-03 14:27:30: [446661] <-- 550-RFC requirements, and stops you from
receiving standard bounce
Fri 2014-10-03 14:27:30: [446661] <-- 550-messages. This host does not accept
mail from domains whose servers
Fri 2014-10-03 14:27:30: [446661] <-- 550-refuse bounces.
Fri 2014-10-03 14:27:30: [446661] <-- 550 Sender verify failed
Receiver menerapkan antispam kuno (populer di tahun 2007 yl) yang
namanya Sender Address Verification.
Protocol itu jarang dipakai orang saat ini karena menghabiskan bandwidth
dengan melakukan koneksi backscatter ke MX sender domain dan sebenarnya
gampang di spoof (dibohongin).
Klo begitu, bagaimana email kami bisa masuk ke mereka Pak ?
Apakah saya harus minta ke mereka untuk daftarkan IP kami di server mereka ?
Mohon petunjuk jika saya salah menyimpulkan.
SAV itu salah satu musuhnya adalah anti backscatter.
Jadi kalau Anda mengktifkan anti backscatter (BATV) maka masukkan IP
receiver tersebut (203.123.240.43) kedalam backscatter whitelist.
http://mdaemon.dutaint.co.id/14.0.1/security--backscatter_protection_dialog.htm
Benar Pak, settingan MD kami mengaktifkan anti backscatter. Saya sudah
masukkan IP mereka kedalam backscatter whitelist.
Apakah harus restart service MD Pak setelah memasukkan IP ke dalam
whitelist backscatter ?
Regards,
*Yudis*
*IT Officer*
+62-21-5347855
Ext.321
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