As others said, this looks like TLS handshake.
(À0À/À(À'À,À+À$À#ÀÀÀ
À0 is 0xC030 = TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
À/ is 0xC02F = TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
On Thursday, 22/05/2025 at 09:56 Nate Burke via mailop wrote:
Has anyone had success getting the "New" Outlook to talk to an Icewarp
Server? With both IMAP and POP3, my server records garbled IMAP/POP3
commands in the connection log from the Microsoft servers. And
outlook
just displays the generic 'Cannot log into server' error.
I'm not looking to start a debate about the merits of MS proxying the
connections through their servers. We're primarily an ISP who also
offers Email, so I have no control over the end users software
decisions. And this is affecting only a small number of my
clients.
For my clients using outlook, they have other accounts with O365, and
want to just add their email account with me into their existing
outlook
instance. MS just forced them to upgrade to the "New" Outlook, which
broke only the connections to my server.
I've opened a ticket with Icewarp, but their reply was just that it
was
an MS problem, as they're sending bad commands. I know that the
internet is full of IMAP/POP3 issues and the new outlook, but I was
wondering if anyone has actually got it working with Icewarp.
This is what's recorded in my IMAP log when outlook tries to
authenticate an IMAP account.
52.96.64.245 [1184] 08:11:50 Connected
52.96.64.245 [1184] 08:11:50 >>> * OK IceWarp Epos Update 1
build 11
IMAP4rev1 Thu, 27 Mar 2025 08:11:50 -0500
52.96.64.245 [1184] 08:11:50 >
‹~H…â§Óˆj‘eƒÀ‡ƒB3ùœ#¯â'c|s€à²² BAD
No such command as "_ÜØÊ!1bs(Û½"·|ãM(u3¬j4œ:"
52.96.64.245 [1184] 08:11:50 > * BAD Command unknown
52.96.64.245 [1184] 08:11:50 Disconnected
40.97.127.205 [1184] 08:11:52 Connected
40.97.127.205 [1184] 08:11:52 >>> * OK IceWarp Epos Update 1 build
11
IMAP4rev1 Thu, 27 Mar 2025 08:11:52 -0500
40.97.127.205 [1184] 08:11:52 + Go ahead
40.97.127.205 [1184] 08:11:52 >>> { wÞ-‘xN‚
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