Email Notification of Ticket Changes
Table of Contents
Trac supports notification of ticket changes via email.
Email notification is useful to keep users up-to-date on tickets of interest, and also provides a convenient way to post all ticket changes to a dedicated mailing list.
Disabled by default, notification can be activated and configured in trac.ini.
Receiving Notification Mails
When reporting a new ticket or adding a comment, enter a valid email address or your Trac username in the reporter, assigned to/owner or cc field. Trac will automatically send you an email when changes are made to the ticket, depending on how notification is configured.
How to use your username to receive notification mails
To receive notification mails, you can either enter a full email address or your Trac username. To get notified with a simple username or login, you need to specify a valid email address in your preferences.
Alternatively, a default domain name (smtp_default_domain) can be set in the TracIni file, see Configuration Options below. In this case, the default domain will be appended to the username, which can be useful for an "Intranet" kind of installation.
When using apache and mod_kerb for authentication against Kerberos / Active Directory, usernames take the form ([email protected]). To avoid this being interpreted as an email address, add the Kerberos domain to (ignore_domains).
Ticket attachment notifications
Since 1.0.3 Trac will send notifications when a ticket attachment is added or deleted. Usually attachment notifications will be enabled in an environment by default. To disable the attachment notifications for an environment the TicketAttachmentNotifier component must be disabled:
[components] trac.ticket.notification.TicketAttachmentNotifier = disabled
Configuring SMTP Notification
Important: The [trac] base_url option must be configured for links in the notification message to be correctly generated.
Configuration Options
These are the available options for the [notification] section in trac.ini:
[notification]
admit_domains | Comma-separated list of domains that should be considered as valid for email addresses (such as localdomain). | (no default) |
ambiguous_char_width | Width of ambiguous characters that should be used in the table of the notification mail.
If | single |
batch_subject_template |
Like | ${prefix} Batch modify: ${tickets_descr} |
default_format.email | Default format to distribute email notifications. | text/plain |
email_address_resolvers | Comma separated list of email resolver components in the order they will be called. If an email address is resolved, the remaining resolvers will not be called. | SessionEmailResolver |
email_sender |
Name of the component implementing
This component is used by the notification system to send emails.
Trac currently provides | SmtpEmailSender |
ignore_domains | Comma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains). | (no default) |
message_id_hash | Hash algorithm to create unique Message-ID header. (since 1.0.13) | md5 |
mime_encoding | Specifies the MIME encoding scheme for emails.
Supported values are: | none |
sendmail_path | Path to the sendmail executable.
The sendmail program must accept the
| sendmail |
smtp_always_bcc | Comma-separated list of email addresses to always send notifications to. Addresses are not public (Bcc:). | (no default) |
smtp_always_cc | Comma-separated list of email addresses to always send notifications to. Addresses can be seen by all recipients (Cc:). | (no default) |
smtp_default_domain | Default host/domain to append to addresses that do not specify one. Fully qualified addresses are not modified. The default domain is appended to all username/login for which an email address cannot be found in the user settings. | (no default) |
smtp_enabled | Enable email notification. | disabled |
smtp_from | Sender address to use in notification emails.
At least one of | trac@localhost |
smtp_from_author |
Use the author of the change as the sender in notification emails
(e.g. reporter of a new ticket, author of a comment). If the
author hasn't set an email address, | disabled |
smtp_from_name | Sender name to use in notification emails. | (no default) |
smtp_password | Password for authenticating with SMTP server. | (no default) |
smtp_port | SMTP server port to use for email notification. | 25 |
smtp_replyto | Reply-To address to use in notification emails.
At least one of | trac@localhost |
smtp_server | SMTP server hostname to use for email notifications. | localhost |
smtp_subject_prefix | Text to prepend to subject line of notification emails.
If the setting is not defined, then | __default__ |
smtp_user | Username for authenticating with SMTP server. | (no default) |
ticket_subject_template | A Genshi text template snippet used to get the notification subject. The template variables are documented on the TracNotification page. | ${prefix} #${ticket.id}: ${summary} |
use_public_cc | Addresses in the To and Cc fields are visible to all recipients. If this option is disabled, recipients are put in the Bcc list. | disabled |
use_short_addr | Permit email address without a host/domain (i.e. username only).
The SMTP server should accept those addresses, and either append
a FQDN or use local delivery. See also | disabled |
use_tls | Use SSL/TLS to send notifications over SMTP. | disabled |
Example Configuration (SMTP)
[notification] smtp_enabled = true smtp_server = mail.example.com smtp_from = [email protected] smtp_replyto = [email protected] smtp_always_cc = [email protected], [email protected]
Example Configuration (sendmail)
[notification] smtp_enabled = true email_sender = SendmailEmailSender sendmail_path = /usr/sbin/sendmail smtp_from = [email protected] smtp_replyto = [email protected] smtp_always_cc = [email protected], [email protected]
Subscriber Configuration
The default subscriptions are configured in the [notification-subscriber] section.
[notification-subscriber]
The notifications subscriptions are controlled by plugins. All
INotificationSubscriber components are in charge. These components
may allow to be configured via this section in the trac.ini file.
See TracNotification for more details.
Available subscribers:
| Subscriber | Description |
|---|---|
AlwaysEmailSubscriber | |
CarbonCopySubscriber | Ticket that I'm listed in the CC field is modified |
NewTicketSubscriber | Any ticket is created |
TicketOwnerSubscriber | Ticket that I own is created or modified |
TicketPreviousUpdatersSubscriber | Ticket that I previously updated is modified |
TicketReporterSubscriber | Ticket that I reported is modified |
TicketUpdaterSubscriber | I update a ticket |
Each user can override these defaults in their Notifications preferences.
For example to unsubscribe from notifications for one's own changes and comments, the rule "Never notify: I update a ticket" should be added above other subscription rules.
The subscription rule name on the left side of the = can be anything, it has no meaning outside this configuration file. The subscriber name on the right side of the = must be one of the subscribers listed in the above table.
The following attributes of default subscriptions can be configured:
.distributor(Default:email)- Other values require plugins. For example
on-siterequires th:OnSiteNotificationsPlugin.
- Other values require plugins. For example
.priority(Default:100)- Smaller values override larger values.
- If you use
0, then users will not be able to override this rule.
.adverb(Default:always)nevercan be used to silence other subscription rules with higher values.
.format(Default:text/plain)- Other values require plugins. For example
text/htmlrequires th:TracHtmlNotificationPlugin.
- Other values require plugins. For example
Example Configuration (default subscriptions)
[notification-subscriber] always_notify_owner = TicketOwnerSubscriber always_notify_owner.distributor = email always_notify_owner.priority = 100 always_notify_owner.adverb = always always_notify_owner.format = text/plain always_notify_previous_updater = TicketPreviousUpdatersSubscriber never_notify_updater = TicketUpdaterSubscriber never_notify_updater.adverb = never never_notify_updater.priority = 0 notify_cc_html = CarbonCopySubscriber notify_cc_html.format = text/html
Customizing the e-mail subject
The e-mail subject can be customized with the ticket_subject_template option, which contains a Genshi text template snippet. The default value is:
${prefix} #${ticket.id}: ${summary}
The following variables are available in the template:
env: The project environment object (see env.py).prefix: The prefix defined insmtp_subject_prefix.summary: The ticket summary, with the old value if the summary was edited.ticket: The ticket model object (see model.py). Individual ticket fields can be accessed by appending the field name separated by a dot, eg${ticket.milestone}.
Customizing the e-mail content
The notification e-mail content is generated based on ticket_notify_email.txt in trac/ticket/templates. You can add your own version of this template by adding a ticket_notify_email.txt to the templates directory of your environment. The default is:
$ticket_body_hdr $ticket_props {% choose ticket.new %}\ {% when True %}\ $ticket.description {% end %}\ {% otherwise %}\ {% if changes_body %}\ ${_('Changes (by %(author)s):', author=change.author)} $changes_body {% end %}\ {% if changes_descr %}\ {% if not changes_body and not change.comment and change.author %}\ ${_('Description changed by %(author)s:', author=change.author)} {% end %}\ $changes_descr -- {% end %}\ {% if change.comment %}\ ${_('Comment:') if changes_body else _('Comment (by %(author)s):', author=change.author)} $change.comment {% end %}\ {% end %}\ {% end %}\ ${'-- '} ${_('Ticket URL: <%(link)s>', link=ticket.link)} $project.name <${project.url or abs_href()}> $project.descr
See the cookbook for additional template customization recipes.
Sample Email
#42: testing
---------------------------+------------------------------------------------
Id: 42 | Status: assigned
Component: report system | Modified: Fri Apr 9 00:04:31 2004
Severity: major | Milestone: 0.9
Priority: lowest | Version: 0.6
Owner: anonymous | Reporter: [email protected]
---------------------------+------------------------------------------------
Changes:
* component: changeset view => search system
* priority: low => highest
* owner: jonas => anonymous
* cc: [email protected] =>
[email protected], [email protected]
* status: new => assigned
Comment:
I'm interested too!
--
Ticket URL: <http://example.com/trac/ticket/42>
My Project <http://myproj.example.com/>
Using GMail as the SMTP relay host
Use the following configuration snippet:
[notification] smtp_enabled = true use_tls = true mime_encoding = base64 smtp_server = smtp.gmail.com smtp_port = 587 smtp_user = user smtp_password = password
where user and password match an existing GMail account, ie the ones you use to log in on http://gmail.com.
Alternatively, you can use smtp_port = 25.
You should not use smtp_port = 465. Doing so may deadlock your ticket submission. Port 465 is reserved for the SMTPS protocol, which is not supported by Trac. See #7107 for details.
Troubleshooting
If notifications are not working, inspect the log for error messages.
Notification errors are not always reported through the web interface, so the user who submits a change or creates a ticket may not get notified about a notification failure. The Trac administrator needs to look at the log to find the error message and traceback.
Permission denied error
Typical error message:
... File ".../smtplib.py", line 303, in connect raise socket.error, msg error: (13, 'Permission denied')
This error usually comes from a security settings on the server: many Linux distributions do not allow the web server (Apache, ...) to post email messages to the local SMTP server.
Many users get confused when their manual attempts to contact the SMTP server succeed:
telnet localhost 25
This is because a regular user may connect to the SMTP server, but the web server cannot:
sudo -u www-data telnet localhost 25
In such a case, you need to configure your server so that the web server is authorized to post to the SMTP server. The actual settings depend on your Linux distribution and current security policy. You may find help in the Trac MailingList archive.
Relevant ML threads:
For SELinux in Fedora 10:
$ setsebool -P httpd_can_sendmail 1
Suspected spam error
Some SMTP servers may reject the notification email sent by Trac.
The default Trac configuration uses Base64 encoding to send emails to the recipients. The whole body of the email is encoded, which sometimes trigger false positive spam detection on sensitive email servers. In such an event, change the default encoding to "quoted-printable" using the mime_encoding option.
Quoted printable encoding works better with languages that use one of the Latin charsets. For Asian charsets, stick with the Base64 encoding.
See also: TracTickets, TracIni, TracGuide, TracDev/NotificationApi
