bug#26307: 25.1; smtpmail hard-coded auth mechanism order does not allow coping with misbehaving servers

[Marco Maggi]

Glenn Morris wrote:

> Marco Maggi wrote:

>>    (defconst smtpmail-auth-supported '(cram-md5 plain login)
>>      "List of supported SMTP AUTH mechanisms.
>>    The list is in preference order.")

>> it would be useful  to have a public API mechanism  to change such order
>> in case the server misbehaves when using the cram-m5 method.

> Intead of recompiling, you can add to your .emacs:

> (with-eval-after-load 'smtpmail
>   (setq smtpmail-auth-supported '(login cram-md5 plain)))

> Perhaps no Emacs change is needed then?

But the symbol is  defined as a constant, so it would  be bad style?  It
is  also  undocumented.  Ideally  one  should  be  able to  select  such
configuration on a per-server basis.
-- 
Marco Maggi