Office 365 my require a signed certificate from a Certificate Authority.


On 8/9/2018 10:23 PM, ChandranManikandan wrote:
Hi Eric,

I think the certificate was expired and the date is in server -rw-r--r-- 1 root   qmail  1.7K Mar 22  2013 servercert.pem

I have checked the certificate validity in outlook while opening.

FYR. PFA

On Wed, Aug 8, 2018 at 9:58 PM, Eric Broch <ebr...@whitehorsetc.com <mailto:ebr...@whitehorsetc.com>> wrote:

    Is the current cert self signed or is it expired?


    On 8/7/2018 10:30 PM, ChandranManikandan wrote:
    Hi Friends,

    Thank you for your support.

    I have solved the Thunderbird issue in Ubuntu 18 version.

    Just open the folder of imap and removed cert8.db and
    certoverride.txt then reconfigured the email.
    It was successfully configured with accept the confirm security
    exception message.

    But am unable to configure in outlook 2016.
    I have created new profile in outlook and tried also, the same
    issue is happening.

    Outlook 2010 is working fine.

    Hi Eric,

    Do i need to reinstall the ssl certificate on COS6 32 bit as you
    given the url.
    Can i follow the instruction to do that.
    Because this is production server that's what worried.


    On Tue, Aug 7, 2018 at 2:18 AM, Rodrigo Cortes <rap...@gmail.com
    <mailto:rap...@gmail.com>> wrote:

        Work fine in all modern devices and browser and a simple
        script can do the work for renew :)

        El El lun, 6 de ago. de 2018 a las 14:16, Remo Mattei
        <r...@mattei.org <mailto:r...@mattei.org>> escribió:

            The only thing I do not like about let’s encrypt is that
            every 90 days my iPhone, was complaining about the cert..
            etc.. so for 12 dollars 2years.. it’s all worth it.

            Remo

            On Aug 6, 2018, at 11:09, Rodrigo Cortes
            <rap...@gmail.com <mailto:rap...@gmail.com>> wrote:

            Hi!

            Use letenscrypt is free :)

            And work fine

            El El lun, 6 de ago. de 2018 a las 12:28, Remo Mattei
            <r...@mattei.org <mailto:r...@mattei.org>> escribió:

                https://www.ssls.com <https://www.ssls.com/>



                On Aug 6, 2018, at 09:26, Eric Broch
                <ebr...@whitehorsetc.com
                <mailto:ebr...@whitehorsetc.com>> wrote:

                Where'd you get this certificate?


                On 8/6/2018 8:46 AM, Remo Mattei wrote:
                I just bought a two year valid cert fro 11.98 or
                so less than $12



                 *dal mio iPhone X*

                Il giorno 06 ago 2018, alle ore 07:20, Eric Broch
                <ebr...@whitehorsetc.com
                <mailto:ebr...@whitehorsetc.com>> ha scritto:

                A signed certificate (not self-signed) may be
                required by Outlook365. If you use LetsEncrypt it
                won't cost a thing. If I remember correctly
                Outlook for my tablet required a signed certificate.

                https://www.qmailtoaster.org/ssl.html
                <https://www.qmailtoaster.org/ssl.html>


                On 8/6/2018 2:12 AM, ChandranManikandan wrote:
                Hi Peter,

                We are using office 365 latest version 2016 and
                office 2010.
                Office 2010 is working perfect without any issue
                but the latest version outlook 2016 (Office 365)
                is having the problem.
                Even unable to configure the new IMAP email account.
                Am always getting this certificate warning
                message whenever opening outlook or configure
                outlook.
                Is it required? PFA warning message.

                My toaster config is below and cache config is
                in passdb in my toaster.conf. What would you
                advise it.


                # Settings for 'stock' qmail-toaster

                auth_cache_size = 32M
                #auth_mechanisms = plain login digest-md5 cram-md5
                auth_mechanisms = plain login digest-md5
                auth_username_format = %Lu
                first_valid_uid = 89
                #first_valid_gid = 89
                log_path = /var/log/dovecot.log
                login_greeting = Dovecot toaster ready.
                #mail_plugins = $mail_plugins quota
                plugin/quota = maildir
                protocols = imap
                ssl_cert = </var/qmail/control/servercert.pem
                ssl_key = </var/qmail/control/servercert.pem
                # the following will likely be the default at
                some point
                ssl_dh_parameters_length = 2048

                namespace {
                  inbox = yes
                location =
                #  prefix =
                   prefix = INBOX.
                # Use 'prefix = INBOX.' for Courier-IMAP
                compatible transparent migration.
                # This forces all client apps to create
                subfolders underneath/within
                # the inbox instead of adjacent to it. It's not
                necessary to be that way.
                # FWIW, shubes thinks this setting is
                annoying/rediculous/retarded.
                # As a practical example, having no prefix
                allows mobile users to select
                # which folders get synchronized. Otherwise
                their whole mailbox is
                # synchronized, and they have no way to choose
                which folders they want sync'd.
                separator = .
                  type = private
                }

                passdb {
                  args = cache_key=%u webmail=127.0.0.1
                  driver = vpopmail
                }

                #protocol imap {
                # imap_client_workarounds = "delay-newmail"
                # mail_plugins = $mail_plugins imap_quota
                # mail_max_userip_connections = 500
                #}

                #protocol pop3 {
                # pop3_client_workarounds = outlook-no-nuls
                oe-ns-eoh
                # pop3_fast_size_lookups = yes
                # pop3_lock_session = yes
                # pop3_uidl_format = UID%u-%v
                #}

                userdb {
                  args = cache_key=%u
                quota_template=quota_rule=*:backend=%q
                  driver = vpopmail
                }

                plugin {
                  quota = maildir:ignore=Trash
                quota_rule = ?:storage=0


                Hi Eric,

                I have tried to click Confirm security for store
                but no process happened. means the screen is
                idle it couldn't happened anything.
                All other systems are configured old thunderbird
                version in ubuntu and all showing the same
                message and able to store it.
                But the newer version unable to store it.




                On Mon, Aug 6, 2018 at 2:57 PM, Peter Peltonen
                <peter.pelto...@gmail.com
                <mailto:peter.pelto...@gmail.com>> wrote:

                    Not sure if this relates to any of your
                    problems:

                    I had a few days ago problem with a Outlook
                    2016 stopping receiving
                    email suddenly.

                    I chased this down to Outlook claming the
                    server did not support the
                    correct authentication method, which was
                    strange as nothing had
                    changed on the server side for a while. The
                    same user's iPhone with
                    the same username/password was working at
                    the same time correctly.

                    What I think it was Dovecot caching
                    credentials somehow wrong:
                    differet caching for iPhone and Outlook
                    causing the problem. I solved
                    it by changing

                    cache_key=%u

                    entries to

                    cache_key=%u%r

                    in /etc/dovecot/toaster.conf

                    so Outlook connecting from different IP got
                    cached differently than
                    the iPhone. Don't know what will happen when
                    they appear in the same
                    WLAN though...

                    Why did this not happen before, I don't
                    know, perhaps Outlook has been
                    updated and uses now some other auth by
                    default than before?

                    Not sure if this relates to your problem at
                    all, as I am running
                    pretty old Dovecot...

                    Best,
                    Peter

                    On Mon, Aug 6, 2018 at 9:19 AM,
                    ChandranManikandan <kand...@gmail.com
                    <mailto:kand...@gmail.com>> wrote:
                    > Hi Eric,
                    >
                    > Yes, we are using Ubuntu latest 64 bit
                    version,
                    > We tried to configure the imap email and
                    we got the attached message and
                    > couldn't configure it.
                    >
                    > Any one face the same issue.
                    >
                    > Please help me to resolve the issue.
                    >
                    > As well the same issue on Outlook 2016
                    unable to receive emails.
                    >
                    > Everything work well before but latest
                    version having the issue.
                    > Is it need to install any certificate on
                    our server.
                    >
                    > Am using COS 6 32 bit , Qmailtoaster.
                    >
                    >
                    >
                    > On Mon, Aug 6, 2018 at 1:22 PM,
                    ChandranManikandan <kand...@gmail.com
                    <mailto:kand...@gmail.com>>
                    > wrote:
                    >>
                    >> Hi Eric,
                    >>
                    >> Yes, we are using Ubuntu latest 64 bit
                    version,
                    >> We tried to configure the imap email and
                    we got the attached message and
                    >> couldn't configure it.
                    >>
                    >> Any one face the same issue.
                    >>
                    >> Please help me to resolve the issue.
                    >>
                    >> As well the same issue on Outlook 2016
                    unable to receive emails.
                    >>
                    >> Everything work well before but latest
                    version having the issue.
                    >> Is it need to install any certificate on
                    our server.
                    >>
                    >> Am using COS 6 32 bit , Qmailtoaster.
                    >>
                    >>
                    >>
                    >> On Mon, Aug 6, 2018 at 5:59 AM, Eric
                    Broch <ebr...@whitehorsetc.com
                    <mailto:ebr...@whitehorsetc.com>>
                    >> wrote:
                    >>>
                    >>>
                    >>> Just an FYI.
                    >>> If your client is using Ubuntu 18.04
                    there is an issue with the network
                    >>> stopping on the local pc.
                    >>> To test get your client to use the GUI
                    network manager and disconnect
                    >>> wait
                    >>> a few seconds then reconnect.
                    >>> We are chasing a similar issue now for a
                    client.
                    >>> To see if this is the issue either try
                    pinging out of the network or
                    >>> loading a web page.
                    >>>
                    >>> best wishes
                    >>>  Tony White
                    >>>
                    >>> On 03/08/18 01:16, Eric Broch wrote:
                    >>>
                    >>> Can you check if the password for the
                    account is saved in Thunderbird on
                    >>> the Ubuntu desktop?
                    >>>
                    >>> In Thunderbird go to
                    Tools->Options->Security->Saved Passwords
                    >>>
                    >>>
                    >>> On 8/2/2018 4:52 AM, ChandranManikandan
                    wrote:
                    >>>
                    >>> Hi Friends,
                    >>>
                    >>> One of our user getting disconnected
                    frequently from thunderbird (Asking
                    >>> passwords) and webmail also not opening.
                    >>>
                    >>> After restart the dovecot service it
                    will working again.
                    >>> But the password is asking frequently.
                    >>> I have restarted the dovecot service
                    frequently.
                    >>>
                    >>> This problem for only one user rest of
                    other users not an issue.
                    >>>
                    >>> I couldn't trace the logs in
                    /var/log/maillog and /var/log/dovecot.log
                    >>>
                    >>> Anyone face the same issue .
                    >>>
                    >>> Could anyone help me to resolve this issue.
                    >>>
                    >>> Note: User is using Ubuntu Desktop with
                    Thunderbird.
                    >>>
                    >>> --
                    >>> Thanks & Best Regards,
                    >>> Manikandan.C
                    >>>
                    >>>
                    >>> --
                    >>> Eric Broch
                    >>> White Horse Technical Consulting (WHTC)
                    >>>
                    >>>
                    >>
                    >>
                    >>
                    >> --
                    >> Thanks & Best Regards,
                    >> Manikandan.C
                    >
                    >
                    >
                    >
                    > --
                    > Thanks & Best Regards,
                    > Manikandan.C
                    >
                    >
                    
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                Manikandan.C
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                White Horse Technical Consulting (WHTC)

-- Eric Broch
                White Horse Technical Consulting (WHTC)





-- */Thanks & Best Regards,
    Manikandan.C
    /*

-- Eric Broch
    White Horse Technical Consulting (WHTC)




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*/Thanks & Best Regards,
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