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Managing Director posted a topic in General DiscussionsIt is now the standard of Comcast and Charter to employ cloudmark.com to check compliance with DMARC standards which requires the "Return-Path:" address to match the "Sent/From:" address. Our shops use sendmail in osCommerce 188.8.131.52, which employs "tep_mail()" and class "email()". The problem is created by sendmail which defaults "Return-Path:" to the Linux host "Username " as Username@domain rather than Sent/From@domain. Accordingly, there needs to be an immediate fix to avoid these bounced emails never reaching our store customers because the default "Return-Path:" fails to mirror the "Sent/From:" address.