550476 - Dummy error message reported when send of read receipt fails

Status: RESOLVED DUPLICATE of bug 483760

(Thunderbird :: General, defect)

Description

[Eddie Duffy]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-GB; rv:1.9.1.8) Gecko/20100216 Fedora/3.5.8-1.fc12 Firefox/3.5.8 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.8) Gecko/20100301 Fedora/3.0.3-1.fc12 Thunderbird/3.0.3

Whenever my laptop is plugged into a network other than my normal ISP, I can't send messages from my usual Thunderbird profile because I get a "relaying not allowed" error. This is fair enough, and as expected. However, if I now read a message from someone who has requested a read receipt (e.g. from MS Outlook), and then select "Send receipt", I get an additional dialogue box after the expected "relaying not allowed" error. That dialogue box says:

"THIS IS JUST A PLACEHOLDER. YOU SHOULD NEVER SEE THIS STRING"

Once I click on "OK" to remove this box, there are no further problems; it just struck me as curious that I should see it at all.

Reproducible: Always

Steps to Reproduce:
1. Plug your computer into a network which has no access to your usual SMTP server;
2. In Thunderbird, select a message from someone who has requested a read receipt;
3. On the "Confirm" dialogue box, click on "Send receipt";
4. On the "Alert" dialogue box ("relaying not allowed"), click OK.
Actual Results:  
An additional dialogue box pops up, saying "THIS IS JUST A PLACEHOLDER. YOU SHOULD NEVER SEE THIS STRING".

Expected Results:  
Everything but display that last dialogue box.

This is not particularly problematic, just curious.