Sonny Susanto wrote: > Dear all, > > Aku punya server postfix sebagai relay dari bbrp domain. > Ternyata ada salah satu domain (ekadharma.co.id) yang tidak bisa > kirim email ke telkom.net dengan error dibawah ini. > >> maillog.4:Sep 7 07:20:39 postfix postfix/smtp[23491]: 12418157DA: >> to=<[EMAIL PROTECTED]>, relay=in-mta3.plasa.com[202.134.0.73], >> delay=121, status=bounced (host in-mta3.plasa.com[202.134.0.73] >> said: 550-Callback setup failed while verifying >> <[EMAIL PROTECTED]> 550-(result of an earlier callout reused). >> 550-The initial connection, or a HELO or MAIL FROM:<> command was >> 550-rejected. Refusing MAIL FROM:<> does not help fight spam, >> disregards 550-RFC requirements, and stops you from receiving >> standard bounce 550-messages. This host does not accept mail from >> domains whose servers 550-refuse bounces. 550 Sender address >> [EMAIL PROTECTED] does not exist (in reply to RCPT TO command))
Kenyataannya memang demikian, primary MX ekadharma.co.id (bukan Postfix) menolak null sender. Server-server MX telkom menerapkan address verification untuk email yang masuk ke sendernya, kebetulan addres yang dipakai oleh server telkom adalah null sender. % host -t mx ekadharma.co.id ekadharma.co.id mail is handled by 10 mail.ekadharma.co.id. % telnet mail.ekadharma.co.id 25 Trying 202.155.110.53... Connected to mail.ekadharma.co.id. Escape character is '^]'. 220 edjsfj.co.id ESMTP MDaemon 6.8.5; Tue, 05 Oct 2004 15:42:59 +0800 helo a.com 250 edjsfj.co.id Hello a.com, pleased to meet you mail from: <> 550 Sorry, this server is configured to refuse this sort of mail (to combat the SPAM problem) quit 221 See ya in cyberspace Connection closed by foreign host. Rgds, Asfihani
