I've got this error when I use my mail server in IIS, the script for mails are ok but the problem is its stays in the queue and never been sent out?? could you help me about this problem here is the message apear in the queues.
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This is a MIME-formatted message.
Portions of this message may be unreadable without a MIME-capable mail program.
This is an automatically generated Delivery Status Notification.
Unable to deliver message to the following recipients, due to being unable to connect successfully to the destination mail server.
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please help me, thanks