On 7 Jan 2026, at 17:51, Alexandre Takacs via mailmate wrote: > Any specifics ? I know that you have to change some default setting in the > tenant but I am not aware of anything significantly new ?
Well, I got this in an e-mail last year: > MC1113673 | July 11 - Exchange Online will remove support for Basic > authentication with Client Submission (SMTP AUTH) by April 30, 2026. Users > must migrate to OAuth or alternative solutions. Basic auth is insecure, and > its deprecation aims to improve security. Affected endpoints include > smtp.office365.com and smtp-legacy.office365.com. Handily and typically, the relevant note seems to have disappeared. :-/ Charlie -- Charlie Clark Sengelsweg 34 Düsseldorf D- 40489 Tel: +49-203-746000 Mobile: +49-178-782-6226 _______________________________________________ mailmate mailing list Unsubscribe: https://lists.freron.com/listinfo/mailmate
