We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

자세히 살펴보기

Thunderbird will not send blind carbon copies

  • 4 답장
  • 3 이 문제를 만남
  • 1 보기
  • 최종 답변자: robtapril

more options

I am trying to send a mass email but I do not want each recipient to see the other recipients' email addresses. I have tried to send all as a BCC, or, alternatively, I have used my personal email address as primary recipient and other emails as BCC recipients but I continue to get Undeliverable messages. The BCC addresses work as primary recipients but not as BCC recipients.

I am trying to send a mass email but I do not want each recipient to see the other recipients' email addresses. I have tried to send all as a BCC, or, alternatively, I have used my personal email address as primary recipient and other emails as BCC recipients but I continue to get Undeliverable messages. The BCC addresses work as primary recipients but not as BCC recipients.

선택된 해결법

Did you put in the semicolon? Whatever has returned this message seems to be mis-parsing the addresses. See where the quotes are placed?

Thunderbird works best with one address per line. If you really must stack up multiple addresses on one line, use commas to separate them.

문맥에 따라 이 답변을 읽어주세요 👍 1

모든 댓글 (4)

more options

What is the exact error message? What mail provider?

Both are important as most sending issues of this kind are caused by two or tree issues.

1. You are sending more messages than your provider allows in one go or one hour or one day.

2. Your provider does not like the mail you are sending with so many BCC recipients and blocks it as spam.

3. Your recipients mail servers or some of them identify the message with BCC as SPAM are refuse delivery.

With the exact error message and the provider we might be able to work out which applies, or if it is one of the more infrequent causes.

more options

The exact error message is:


HE1EUR01FT056.mail.protection.outlook.com rejected your message to the following email addresses:

"ronbales1@gmail.com; robtapril"@hotmail.com A communication failure occurred during the delivery of this message. Please try to resend the message later. If the problem continues, contact your email admin.

HE1EUR01FT056.mail.protection.outlook.com gave this error: Requested action not taken: mailbox unavailable.

This was a test message. Only 2 recipients. Both sent as BCC recipients. I get similar error messages when I send to a primary recipient and 1 or 2 BCC's.

more options

선택된 해결법

Did you put in the semicolon? Whatever has returned this message seems to be mis-parsing the addresses. See where the quotes are placed?

Thunderbird works best with one address per line. If you really must stack up multiple addresses on one line, use commas to separate them.

more options

Thanks. Problem solved. I separated the emails by comma instead of semicolon. Works fine now.