On 08/12/15 05:29, sb wrote: > Our point of view is plain: are we dealing with "proper" e-mail servers? > Can they *both* send and receive e-mail?
> How else could you tell them apart? Postscreen was created to do exactly this, but you currently have it disabled. DNSBLs is another recommended way to do this, but you don't want to use DNSBLs. The above two combined create an excellent, lightweight defence against spambots, but rather than use the technology that was specifically developed and vetted for this purpose you want to make up something yourself that: * Violates RFCs * Doesn't work * Isn't supported by postfix ...and you are asking for your crazy scheme to be supported by postfix and work, but it simply does not and will not. Use the methods that have been tested and are tried and true and stop trying to re-invent this wheel to be some other shape than round. Peter
