----- Original Message ----- | From: "Al Iverson via mailop" <mailop@mailop.org> | To: mailop@mailop.org | Sent: Friday, June 27, 2025 4:29:13 PM | Subject: Re: [mailop] Checking existence of recipients <snip> | | And the whole topic raised here doesn't even feel operational to me. | Whether or not somebody SMTP verifies email addresses or not, why they | can't just simply implement double opt-in, whether or not the next | mail attempt to the recipient in questions bounces, nothing here feels | operational in nature. These feel like strategic business or marketing | related considerations. There's no way that any choice picked here | significantly impacts the operational uptime of a mail server. <snip> | | Al Iverson // 312-725-0130 // Chicago | http://www.spamresource.com // Deliverability | http://www.aliverson.com // All about me | https://xnnd.com/calendar // Book my calendar | _______________________________________________ | mailop mailing list | mailop@mailop.org | https://list.mailop.org/listinfo/mailop
To be fair, someone did bring up VRFY, which I guess is operational, and which we turn off on every system we build. :-) But yes, I agree that double opt-in is really the only way to go these days. Regards, Mark -- _________________________________________________________________ L. Mark Stone, Founder North America's Leading Zimbra VAR/BSP/Training Partner For Companies With Mission-Critical Email Needs Winner of the Zimbra Americas VAR Partner of the Year - Two Years Running ! _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop