Email forwarder, the "to" is the old email address ?

lulzkiller

• April 09, 2026 07:34

Hello

I've setup an email forwarder for a customer email.
The email gets forwarded correctly. But the receiver (external mailbox) The TO field is where the email is coming from?

LIke 

a@domain.com forwards email to b@external.com - In b@external.com he receive the email, but the to: field is still a@domain.com, which should be b@external.com since its forwarded to this mailbox ?

How can i solve this ?

• 

  cPRex Jurassic Moderator

  • April 09, 2026 13:54

  Hey there!  This is how forwarders have always operated, not only in cPanel but across most all email clients - the original sender is maintained across the forwarder.

  I don't have a way to easily change this on my end as a forwarder is designed to route the message to a different location but not change the actual email data itself.

   

  0
• 

  Sysco Shims

  • April 13, 2026 10:15

  Hi,

  This is normal behavior for email forwarding. When a@domain.com
   forwards an email to b@external.com
  , the “To:” header remains as a@domain.com
   because it reflects the original recipient specified by the sender. Forwarding occurs at the server (envelope) level and does not modify the original message headers.

  If you want to verify the forwarding, check headers such as Delivered-To or X-Original-To, which will show that the message was routed to b@external.com
  .

  Changing the “To:” field is generally not recommended, as it can interfere with SPF, DKIM, and DMARC authentication and may affect deliverability. If needed, you can instead add a custom header (e.g., X-Forwarded-To) or include a note in the subject line.

  0

Please sign in to leave a comment.