Confirmation email sent from my website goes to customers SPAM folder for email accounts like hotmail, outlook, etc.. The reason could be from the website IP address which is blacklisted for spam because it host too many websites.
I want confirmation emails sent to customers when they register, to use external smtp relay server/IP, so that these emails sent automatically from the site donot go to SPAM folders.
website is in php. This is a small project, and no need for outrageous quotes.