Question

I have implemented a postfix mail receiving server. On this server I am receiving mails coming from Blackberry too.

Since Blackberry implements Sender Rewrite Scheme (SRS), I want to know how can I validate the authenticity of the SRS present in the incoming mails.

Sample email header that contains Blackberry SRS:

Authentication-Results: dev1.cpgtest.ostinet.net; sender-id=neutral header.from=[e-mail]; spf=pass smtp.mfrom=SRS0=nRLNv7=UW=aol.com=[e-mail]

thanks in advance

Ashish Sharma

Answer 1

Only the server that has implemented SRS can verify the authenticity of the SRS.

For third parties, above is possible if some external API is available.