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Addressing email to the same person in TO and CC fields

  • 2 replies
  • 1 has this problem
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  • Last reply by Ykanti

Ykanti
Ykanti
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Hi,

Sometimes I am addressing an e-mail TO List-A while CCing List-B. If TSmith@XYZ.com is in both lists, I get the following error (and cannot send the note):

An error occurred while sending mail. The mail server responded: 5.5.0 Recipient already specified.

I can replicate the issue by addressing a note to myself (not a group or list, just my address) in both to and cc and the same error pops up.

This is difficult to rectify if there are 30 people in List A and 44 in List B and the overlap is 6 names. Is there a way to override this error processing (who cares if the e-mail is going to the same person twice - I seem to remember doing that for years in Outlook when I might send to a group of employees in department X along with a group who were physically located in location Y and some of them overlapped)???

Thanks for any help you can offer!

Hi, Sometimes I am addressing an e-mail TO List-A while CCing List-B. If TSmith@XYZ.com is in both lists, I get the following error (and cannot send the note): An error occurred while sending mail. The mail server responded: 5.5.0 Recipient already specified. I can replicate the issue by addressing a note to myself (not a group or list, just my address) in both to and cc and the same error pops up. This is difficult to rectify if there are 30 people in List A and 44 in List B and the overlap is 6 names. Is there a way to override this error processing (who cares if the e-mail is going to the same person twice - I seem to remember doing that for years in Outlook when I might send to a group of employees in department X along with a group who were physically located in location Y and some of them overlapped)??? Thanks for any help you can offer!

All Replies (2)

MCVenner
MCVenner
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What you're observing is an artifact, not of Thunderbird but, of the SMTP server through which your mail is being sent. The outbound mail servers for AOL.com, AIM.com, SBCglobal.net, and Yahoo.com DO behave as you describe. Those for Disroot.org, EarthLink.net, Gmail.com, GMX.com, HotMail.com, Live.com, Outlook.com, Vivaldi.net, Yandex.com, and Zoho.com DO NOT behave this way. Interestingly; none of the aforementioned eMail services will, upon receipt of multiple mailpieces with the same Message ID destined for a common mailbox, place more than one such mailpiece in said mailbox.

Ykanti
Ykanti Question owner
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Thanks MC - makes sense. Guess it's off to the Yahoo boards for me to see if someone knows how to work around their implementation (although if it's at the server level, I suppose it's always going to return an error to T-bird before one can get Y! to ignore the condition). Cheers.