I’m wondering if anyone can shed light on this error message (Outlook for Mac): host mx2.hc3579-74.iphmx.com [139.138.58.193] SMTP error from remote mail server after DATA: 550 #5.7.1 Your access to submit messages to this e-mail system has been rejected I’ve sent multiple messages to the same address with no problem. Suddenly they’re being rejected. Thanks, Fred Fred Levine Small Batch Books 493 S. Pleasant St. Amherst, MA 01002 413.230.3943 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.hidden-tech.net/pipermail/hidden-discuss/attachments/20200527/2808fde5/attachment.html>