There is no reason to go into that much detail. TL;DR: The only verification that has a reasonable chance of of working is to send each of these addresses a message asking them to verify that the message was received.
The method you described might have worked in a pre-spam world, but you are at least 20 years too late for that, and VRFY actually producing results is very rare these days. So the likelihood of extracting any useful information form the method you describe is extremely low, and you run a risk of impacting your "IP reputation". So my best advice is to switch to sending a message which askes the recipient to make some kind of verification action, such as going to a specified URL and performing some action there. - Peter -- Peter N. M. Hansteen, member of the first RFC 1149 implementation team http://bsdly.blogspot.com/ http://www.bsdly.net/ http://www.nuug.no/ "Remember to set the evil bit on all malicious network traffic" delilah spamd[29949]: 85.152.224.147: disconnected after 42673 seconds.
_______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
