i am using mercury 32 C module. when i send email through relaying, receiver does not get my email address instead he receives relaying email address.
How can i change the relaying email address to be displayed in "from" field.
If it is really an relaying server, it shouldn't rewrite the from address. If it does, you have to check with your provider why he does this and if he is willing to turn it off. If, on the other hand, you try to use an SMTP server that is meant for another domain (like you try to send mail firstname.lastname@example.org via the GMail SMTP server), the server operator does this on purpose to prevent this and you can't stop it and shouldn't try.