Ok, problem solved, there was a problem with .cert. I change smtp server not by defualt by dns by directly to server and then this one is not making any errors.

Exception:

EmailService.php on line 532:
"Warning: stream_socket_enable_crypto(): Peer certificate CN=*.linuxpl.com' did not match expected CN=mail.transport-wietrak.eu'"

Ok, so swiftmailer.yaml looks now :

root@server:/var/www/html/uvdesk# cat config/packages/swiftmailer.yaml
swiftmailer:
    default_mailer: invoices
    mailers:
        invoices:
            transport: smtp
            username: invoices@transport-wietrak.eu
            password: **********
            host: mail.transport-wietrak.eu
            port: 587
            encryption: tls
            auth_mode: login
            sender_address: invoices@transport-wietrak.eu
            delivery_addresses: ['']
            disable_delivery: false

I added also this row in exception, but Symfony Profiler didn't show any other error after that.
Where this exception message should be ?

Hi,

I can not find a solution:
Here You can find settings in yaml filles resposible for sendingn emails.

1. uvdesk.yaml

root@server:/var/www/html/uvdesk/config/packages# cat uvdesk.yaml

parameters:
    app_locales: en|fr|it

    # Default Assets
    assets_default_agent_profile_image_path: 'bundles/uvdeskcoreframework/images/uv-avatar-batman.png'
    assets_default_customer_profile_image_path: 'bundles/uvdeskcoreframework/images/uv-avatar-ironman.png'
    assets_default_helpdesk_profile_image_path: 'bundles/uvdeskcoreframework/images/uv-avatar-uvdesk.png'

    uvdesk_site_path.member_prefix: member
    uvdesk_site_path.knowledgebase_customer_prefix: customer

    # File uploads constraints
    # @TODO: Set these parameters via compilers
    max_post_size: 8388608
    max_file_uploads: 20
    upload_max_filesize: 2097152

uvdesk:
    site_url: 'localhost:80/uvdesk/public'
    upload_manager:
        id: Webkul\UVDesk\CoreFrameworkBundle\FileSystem\UploadManagers\Localhost

    support_email:
        id: invoices@transport-wietrak.eu
        name: Invoices
        mailer_id: invoices

    # Default resources
    default:
        ticket:
            type: support
            status: open
            priority: low
        templates:
            email: mail.html.twig

2. swiftmailer.yaml

root@server:/var/www/html/uvdesk/config/packages# cat swiftmailer.yaml
swiftmailer:
    #spool: { type: memory }
    default_mailer: invoices
    mailers:
        invoices:
            transport: smtp
            username: invoices@transport-wietrak.eu
            password: ********
            host: mail.transport-wietrak.eu
            port: 587
            encryption: tls
            auth_mode: login
            sender_address: invoices@transport-wietrak.eu
            delivery_addresses: ['invoices@transport-wietrak.eu']
            disable_delivery: false

3. uvdesk_mailbox.yaml

root@server:/var/www/html/uvdesk/config/packages# cat uvdesk_mailbox.yaml
uvdesk_mailbox:
    emails: ~
        # Often Reply emails like from gmail contains extra and redundant previous mail data.
        # This data can be removed by adding delimiter i.e. specific line before each reply.
        # delimiter: '<-- Please add content above this line -->'
        # enable_delimiter: true

    # Configure your mailboxes here
    mailboxes:
        invoices_get:
            name: Invoices
            enabled: true

            # [SMTP] Outgoing mail server
            # Swiftmailer smtp mailer to use for sending emails through on behalf of this mailbox
            smtp_server:
                mailer_id: invoices

            # [IMAP] Incoming mail server
            # IMAP configurations to use for fetching emails from mailbox
            imap_server:
                host: '{mail.transport-wietrak.eu:143/imap/tls/novalidate-cert}INBOX'
                username: invoices@transport-wietrak.eu
                password: *********

        mailbox_4133:
            name: lukasz_todo
            enabled: true

            # [SMTP] Outgoing mail server
            # Swiftmailer smtp mailer to use for sending emails through on behalf of this mailbox
            smtp_server:
                mailer_id: invoices

            # [IMAP] Incoming mail server
            # IMAP configurations to use for fetching emails from mailbox
            imap_server:
                host: '{mail.transport-wietrak.eu:143/imap/tls/novalidate-cert}TASK'
                username: lukasz.wietrak@transport-wietrak.eu
                password: **********

All ok, just need to log in with path public/en/member/login. Thank You for help, perfect job.

@Sanjeev something is not working properly, I created new user account with passwords and I can't still log in...
Is it some special login path for members/admins to log in or it is the same ?

Thank You, works for me.
Are You sure about login password to system ?
Email is correct becouse I see it on db, but password is protected so I can't confirm it.
I can't log in...

Hi,
ubuntu 18.04 , I checked installation version from composer and also from zip file, same error.
I checked also configuration by shell script, didn't help. I don't know what to do... I am not sure if it ask about super admin account from uvdesk or the symfony framework, I found some ideas on forum like changing url parameter add/remove "resolve" in config file doctrine.yaml, but that didn't help also.

I am quite sure or chmods done correctly, php limit set in php.ini, and also permission apache to override set on ALL.
Please check it guys, I sucked.