Kai Siering wrote on [mailop]: > how about starting internal discussions within that community > to include a default rejection of any mail from @t-online.de > in Exim's default configuration?
> As nearly no-one who is deploying Exim > (or Postfix, Sendmail for that matter) > will be able to *send* to @t-online.de due to their policy, > it is only logical to not *accept* any mail from them, too. I propose to include in default Exim config (in rcpt ACL) a code which checks whether the server is blocked by t-online.de: warn set acl_m_ton = notton condition = ${if or{\ {eqi{$sender_address_domain}{t-online.de}}\ .ifdef _HAVE_LOOKUP_DNSDB {forany{${lookup dnsdb{>: defer_never,mxh=$sender_address_domain}}}\ {match{$item}{\N^mx\d+\.t-online\.de$\N}}}\ .endif }} set acl_m_ton = checkdefer !verify = sender/callout=10s set acl_m_ton = $acl_verify_message deny condition = ${if !eq{$acl_m_ton}{notton}} condition = ${if !eq{$acl_m_ton}{checkdefer}} message = sender verify failed: $acl_m_ton deny condition = ${if eq{$acl_m_ton}{checkdefer}} message = We checked that $sender_address_domain blocks us. \ So we do not accept a message we cannot reply to. # The server admin may change "deny" to "warn" and # "message =" to "control = fakereject/" # but few admins will want that (or notice and bother). -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/