1447044 - BCC emails are NOT delivered

Status: RESOLVED INCOMPLETE

(Thunderbird :: Message Compose Window, defect)

Description

[Cigar Guy]

User Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36

Steps to reproduce:

Create a new email
Add bcc address ( to one of your alternate address)
Send email , 
Email is sent
Check your alternate email.
BCC emails are NOT sent 
I tested this online on email client native to Android.
BCC mails sent from my android mobile work. Why NOT Thunderbird??
They use a different connect server string and different ports.
mail.<your-domain-name.com> Port 993 for IMAP
mail.<your-domain-namecom> Port 465 , SSL  for SMTP



Actual results:

BCC messages are lost in ether


Expected results:

BCC messages must be sent.

Comment 1

[Jorg K (CEST = GMT+2)]

Thunderbird sends the entire message to the outgoing SMTP server. If that server doesn't ship the message to the BCC recipients, there's nothing we can do. Who is your mail provider?

Comment 2

[Cigar Guy]

Hostgator:
I mean bcc emails are sent from native email app from android where I have set up the same account. THE ISP / MY Domain sends BCC emails from those? So by isolation of events, it appears Mozilla / hostgator settings combination is the suspect

Comment 3

[Wayne Mery (:wsmwk)]

 I doubt this is our problem, and this rings a bell but can't put my finger on it. Various weird things can happen with BCC, like bug 1279558.

Comment 4

[Wayne Mery (:wsmwk)]

Does the copy of the message in your sent folder indicate that BCC was in fact used? (View Source)

Comment 5

[Cigar Guy]

I view source  , the header appears like this
BCC: [e-mail], [e-mail],
 [e-mail]
To: [e-mail]
From: Cxxr-xxx <[e-mail]>
Subject: Test BCC 4
Organization: xxa Cxxx
Message-ID: <[e-mail]>
Date: Tue, 20 Mar 2018 10:31:36 -0400
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:59.0) Gecko/20100101
 Thunderbird/59.0
MIME-Version: 1.0
Content-Type: multipart/mixed;
 boundary="------------23D58E8E9E7AA4DF0CD09550"
Content-Language: en-US

This is a multi-part message in MIME format.
--------------23D58E8E9E7AA4DF0CD09550
Content-Type: multipart/alternative;
 boundary="------------2B6A7219F770513FF14913E0"


--------------2B6A7219F770513FF14913E0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit

Test

Comment 6

[Cigar Guy]

BCC messages does not even hit my SMTP server. 
I did a test: Manually changed SMTP settings to settings used in Android Native email.  Even then it does not, While my android app happily sends BCC.  TB throws security certification unidentified error. I confirmed the exception and still, it is not going thru... This appears not a issue with Hostgator SMPT issue, if so it needs to be consistent in rejecting BCC from any and all clients, not just Thunderbird.

Comment 7

[Wayne Mery (:wsmwk)]

Doesn't make sense that this would fail for bcc but work for To: and Cc:  unless Thunderbird is formatting it incorrectly or not providing the Bcc at all.  

You are able to send with To: <your alt address> and bcc: <some other address>?

Can you provide a short smptp log of the transaction?
 see https://wiki.mozilla.org/MailNews:Logging

Comment 8

[Wayne Mery (:wsmwk)]

Needs more info.