debian cyrus 3.0.8 saslauth, AD and apple mail pop3s issue - solved

Lars Schimmer l.schimmer at
Tue Aug 20 05:12:53 EDT 2019

On 8/20/19 11:01 AM, Sebastian Hagedorn wrote:
> Am 20.08.19 um 10:45 Uhr schrieb Lars Schimmer:
>> Hi!
>> I did setup a debian buster system with cyrus 3.0.8-6
>> We setup cyrus to use saslauth to authenticate against AD.
>> So far all known windows/linux IMAP clients do fetch their IMAP mails
>> without issues.
>> But we got a issue with POP3s on a iPad, it cannot login and I do not
>> see much information why it does not work, not much in logs.
>> Any seen this issue before?
> No, but I wonder if IMAP works on the iPad. If not I would suspect
> certificate issues. When you say "not much in logs", what do you see?
> If the iPad gets past the SSL handshake, you should be able to see
> what's going wrong by enabling telemetry on the server. Create a
> directory with the user name in
> config directory/logs
> Make sure that it's writable by Cyrus.

Thank you for the tips. IMAP does work flawless.

I did have had a deeper look in some older posts, and I did find, I did
have had libsasl2-modules-ldap:amd64 2.1.27 installed.

Removing that deb package, restart cyrus, IMAP still works fine, and
pop3s works for apple.

what a strange issue.
But thanks all, works now.

Lars Schimmer
TU Graz, Institut für ComputerGraphik & WissensVisualisierung
Tel: +43 316 873-5405       E-Mail: l.schimmer at
Fax: +43 316 873-5402       PGP-Key-ID: 0x4A9B1723

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