Web Reference: Postfix always produces bounce message header labels of the form " From: " and " Subject: ". o Template message headers must not span multiple lines. o Template message headers do not support $parameter expansions. o Template message headers must contain ASCII characters only, and must not contain ASCII null characters. Finally, I've heard people mention a soft bounce vs. a hard bounce. Can someone explain the different and how they should be counted to know when to permanently remove someone from an email newsletter? DevOps & SysAdmins: Postfix bounce when unable to validate TLS optionHelpful? Please support me on Patreon: https://www.patreon.com/roelvandepaarWith thanks...
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