PHP Emailing

hi,

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

Loganathan N
BOSCO ITS
India
LVL 36
Loganathan NatarajanLAMP DeveloperAsked:
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mario_ccsConnect With a Mentor Commented:
An open mail relay is an SMTP (e-mail) server configured in such a way that it allows anyone on the Internet to relay (i.e. send) e-mail through it.

http://en.wikipedia.org/wiki/Open_mail_relay

You could use a program like this:

http://www.phplist.com/
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