Hello,

Is it just me, or outlook.com servers don't support sending mails to servers with ECDSA certificates?
I this kind of error when outlook.com servers attempt to deliver emails:
2019-06-27 09:02:44.980 [74026] TLS error on connection from mail-bgr052101135027.outbound.protection.outlook.com (EUR03-DB5-obe.outbound.protection.outlook.com) [52.101.135.27]:56511 I=[w.x.y.z]:25 (SSL_accept): error:140270C1:SSL routines:ACCEPT_SR_CLNT_HELLO_C:no shared cipher

I haven't really seen this kind of behaviour with any other big provider. Although, I also see it with some (presumably) MS exchange servers.

Regards

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