Hi experts, i have a issue with my mail delivery.. whenever users register, they will get an activation link.. now since the mail is not delivered, many of them are unable to register... i knew that the exims use greylists when they dont recoganize and make my mailserver wait for a time and expecting my mailserver to retry.. is there any way i can add my mailaddress to the global whitelist(anything exist like that)? so that my mails will deliver within seconds?
Registration confirmation e-mails with activation links are unreliable. I'd recommend using a combination of recaptcha, human question/answers, and other mechanisms to confirm that registrations are real people and not spam bots. -Raymond