E-Mail notifications lost when some cc addresses are invalid

[Dan <trac@…>]

Adding invalid addresses (e.g. spelled incorrectly) in the "cc" field may cause notifications to valid addresses to be lost. The addresses lost seem to be positional. For instance, with four addresses in the "cc" (plus a valid reporter), if the first and last "cc" addresses are to incorrect users, then none of the users receive a notification. If maybe just the first "cc" address is invalid, and there are two good addresses, maybe only the reporter notification is lost.

There seem to be some various combinations of behavior as to which addresses get the notifications versus location of invalid addresses in the string.

I believe this was also a problem in earlier Trac releases.

Platform is Win XP 64, Python 2.4.2

[Emmanuel Blot]

Notification implementation has been slightly rewritten in 0.10, I'll try to reproduce this issue.

[Emmanuel Blot]

Can you check if the problem still occurs with trunk​ from [2936] ?

[Emmanuel Blot]

This problem should have been fixed in 0.10:

• Notifications are now send within a single post to the SMTP server, and SMTP servers accept an email if at least one out of the specified recipients is valid.
• Previous releases (0.9) used to post one email per recipient, so the delivery might have been interupted when the first error -invalid email address- was encountered.

Please re-open this ticket if you can reproduce the issue with a recent version:trunk​