Maybe this one offers some clues? Although if they are shutting down basic auth the time may have come
https://docs.microsoft.com/en-us/Exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-microsoft-365-or-office-365 -- rk From: ProfoxTech <profoxtech-boun...@leafe.com> On Behalf Of Ted Roche Sent: Wednesday, June 15, 2022 4:31 PM To: profoxt...@leafe.com Subject: Legacy app using wwipstuff.dll fails sending Office365 email Hi, folks: An ancient legacy app (soon to be mothballed) has been using wwipstuff.dll to send email through outlook.com since at least 2013 or so. Once in a blue moon we've needed to tweak parameters but nothing for around 5 years. I used BLAT to debug and get all the parameters set up correctly. Today, trying to get t to work, I get the error: <<<getline<<< 354 Start mail input; end with <CRLF>.<CRLF> <<<getline<<< 550 5.7.64 TenantAttribution; Relay Access Denied [BN1NAM02FT037.eop-nam02.prod.protection.outlook.com] Message not accepted by server >>>putline> This looks like some new requirement by outlook. A quick web search yields: https://docs.microsoft.com/en-us/exchange/troubleshoot/email-delivery/relay-access-denied-smtp<https://protect-us.mimecast.com/s/aMqOC4xkqzTEqRLhMsDtW?domain=docs.microsoft.com> which talks about using certificates (doubtful) or a fallback IP address mode, which I don't remember having to walk them through before. Anybody ran into this and know a quick fix? [excessive quoting removed by server] _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: https://mail.leafe.com/mailman/listinfo/profox OT-free version of this list: https://mail.leafe.com/mailman/listinfo/profoxtech Searchable Archive: https://leafe.com/archives This message: https://leafe.com/archives/byMID/mn2pr10mb3407b61f3d92d3add3392f4dd2...@mn2pr10mb3407.namprd10.prod.outlook.com ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
