I'm using some my own server for marketing, recently I face a huge problem to send from it my newsletters to a member's, but i found at my monitoring screen that there is an error displayed, i do not know who is responsible for this error ISP or Provider i mean owner IP(s), here is example of the error has been displayed:
Error: connection closed by the remote host while connected from sub.domain.com (00.00.000.00) to mx3.hotmail.com (00.00.00.000)
Are there any suggest for to solve this issue instantly!?
please kindly to suggest us any good news