nmanousos/email-existence — pull request #16 by faridfadaie (2014-10-08 21:21:09+00:00)
Title: fixing the issue that some mail servers interpret "mail from: <abc@examp...

Some mail servers interpret "mail from: ", "rcpt to: " as a relay request and respond with "Sender address rejected: User not allowed to relay via this host" even if abc@example.com exists.

Making the "mail from" customizable, will solve this issue. The change is backward compatible.