i've written code to send email to the collection of email ids from the database. (i.e bulk mail, newsletter)... i'm allowing a person to send bulk mail to the collection of email ids. when i send email.. i just select email id and compose body message/text.. am sending the email ids. now the mail is not going for few people... due to inactive email ids, rejecting receiver SMTP...etc.,
now my problem is web admin says ...we should not send bulk email using open relay. i like to know what is open relay, then how to send bulk email without open relay?
kindly answer for this. thanks in advance