Cannot send mails from new persons/mailboxs setup in 8.4 or 8.5
Julia Underwood
9-9-18

Customer upgraded to 8.4 (same for 8.5) Old persons can send emails, new persons setup after upgrade cannot. The person can send emails if given the email address of another user who can send. SO it would appear to be new email addresses or mailboxes that have the issue.

Server log gives message:

/THREAD(4) 550 5.7.1 Client does not have permissions to send as this sender"

Email remains in queue with sent marker 0

Julia Underwood
9-9-18
I have the solution - not a SERP issue
Leave Comment
You can subscribe to notifications for this post by selecting the 'star' icon on the top right corner of the post.
Back to the list
Latest Posts
Hi there, Server – tried both Windows Server 2022 and Linux Version - 2025-08-11 and 2026-05-25 We were testing a new version (2025-08-11) with a Halcust that we had migrated from the existing ...
10:11 4 Aug 2026
Kevin Stepper
Hi, years ago we used to have the email and conference module. Did not need it so we dropped it. We hav recently implemented global users, which are all named users and therefor seem to need a m...
18:07 3 Aug 2026