#23944: Django should use custom exceptions for errors thrown by send_mail 
(etc.),
not smtplib.SMTPException
-------------------------------+--------------------------------------
     Reporter:  jordanreiter   |                    Owner:  nobody
         Type:  Uncategorized  |                   Status:  new
    Component:  Core (Mail)    |                  Version:  1.7
     Severity:  Normal         |               Resolution:
     Keywords:                 |             Triage Stage:  Unreviewed
    Has patch:  0              |      Needs documentation:  0
  Needs tests:  0              |  Patch needs improvement:  0
Easy pickings:  0              |                    UI/UX:  0
-------------------------------+--------------------------------------

Comment (by berkerpeksag):

 I don't think subclassing will be enough in some cases. Some exceptions
 will have additional attributes, and the user may need to catch these
 exceptions and do something with their attributes. For example:

 {{{#!python
 try:
     send_mail()
 except FooException as exc:
     if exc.err_code == 42:
         logger.exception("...")
     raise
 }}}

 With a generic exception, the user will also need to check whether
 `err_code` is defined or not:


 {{{#!python
 from django.core.mail.exceptions import EmailError

 try:
     send_mail()
 except EmailError as exc:
     if getattr(exc, "err_code", 0) == 42:
         logger.exception("...")
     raise
 }}}

 or:

 {{{#!python
 from django.core.mail.exceptions import EmailError

 try:
     send_mail()
 except EmailError as exc:
     if issubclass(exc, FooException) and exc.err_code == 42:
         logger.exception("...")
     raise
 }}}

 or, catch the `FooException` explicitly:

 {{{#!python
 from django.core.mail.exceptions import EmailError

 try:
     send_mail()
 except FooException as exc:
     if exc.err_code == 42:
         logger.exception("...")
     raise
 except EmailError:
     pass
 }}}

--
Ticket URL: <https://code.djangoproject.com/ticket/23944#comment:4>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

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