[exim-dev] [Bug 2860] New: TFO stopped working

https://bugs.exim.org/show_bug.cgi?id=2860

            Bug ID: 2860
           Summary: TFO stopped working
           Product: Exim
           Version: 4.95
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: bug
          Priority: medium
         Component: TLS
          Assignee: jgh146exb@???
          Reporter: hi@???
                CC: exim-dev@???

Hi there,

I noticed TFO stopped working after upgrading from late-2021 master, to current
master, despite I haven't changed anything in configurations.

Old logs:-

2022-01-24 15:31:13 1nC1JH-000RET-1L => emailaccount@??? R=dnslookup
T=remote_smtp H=gmail-smtp-in.l.google.com [2a00:1450:400c:c1b::1a] TFO
X=TLS1.3:TLS_AES_256_GCM_SHA384:256 CV=yes K C="250 2.0.0 OK
e5si14180180wrg.765 - gsmtp"

New logs:-

2022-02-21 15:55:18 1nMB1w-0000rD-17 => emailaccount@??? R=dnslookup
T=remote_smtp H=gmail-smtp-in.l.google.com [2a00:1450:400c:c06::1a]
X=TLS1.3:TLS_AES_256_GCM_SHA384:256 CV=yes K C="250 2.0.0 OK m7si6010479wmq.26
- gsmtp"

Looking forward for any clarifications, with thanks.

Zakaria.

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