yesterday I have setup my mail server that using postfix to only allow sender that have a valid hostname with A and MX entry in DNS, and in smtpd_recipient_restriction too
to deny some tricky client that use my mail server maybe like this telnet myserver 25 helo myserver mail from:[EMAIL PROTECTED] rcpt to:[EMAIL PROTECTED] so client that don't have a valid hostname can't do that now trouble comes up, I guess that some domain don't have PTR entry in DNS, I check my maillog I saw that postfix reject email like this : reject: RCPT from unknown[202.56.156.89]: 450 <[EMAIL PROTECTED]>: Sender address rejected: Domain not found; should I turn this off? -- ichtus ------ Lewi Supranata .K ICQ: 50643061 Homepage : http://mercury7.petra.ac.id/~ichtus GnuPG Key : http://mercury7.petra.ac.id/~ichtus/ichtus-keys
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