Forum Discussion
Undeliverable:???
- Update(?): I read somewhere there is an update in progress, which will go through July 15, 2022. I will have to wait until after that date and check again. MEANTIME, though, I (LUCKILY) have another source to send, reply to, and forward(?) messages. Inconvenient, but at least "it" is there!
https://answers.microsoft.com/en-us/msoffice/forum/all/550-57520-access-denied-when-forwarding-to-another/c519e969-b4b4-44be-bc40-89509cb4113c
Hi this information should be helpful if it concerns work, and if it is a private (personal address) then the repair must be done by the account owner.
Oh, FTR- "It" is a "personal address," and I AM the "account owner."
If you are getting sent to one address in two mailboxes, either the outlook mailbox is forwarding to Gmail or Gmail is configured to go out and get mail.
In each account, check settings - in outlook on the web, its Outlook.com's Settings (gear icon) > View all Outlook settings > Mail - Rules and Forwarding. In Gmail its under the POP/IMAP/forwarding section in Settings.
As for the spam - your messages are being converted to RTF format. That can cause some filters to reject it.
>> Content-Type: application/ms-tnef; name="winmail.dat"
Are you using Outlook desktop or Outlook on the web to send?
When addressing mail, when the address comes up in the autocomplete list, delete it then select it from contacts.
Note: delisting is for your mail server IP - if you are using Outlook.com, you cannot delist it.- I am using Outlook on the web (outlook.live.com).
Can you explain what settings in Outlook led to such outgoing mail blocking?
" And underneath, it reads: "Remote Server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)' " "
- Best guess: messages with winmail.dat files are being identified as spam, possibly because its a .dat file. It could be because the filters can't scan the winmail.dat file and it may contain an infected attachment.
If you are using HTML message format and send a meeting invite in outlook format, the autocomplete entry for the address is updated to use RTF. All future messages may be sent RTF until you delete the autocomplete entry.
If using Outlook desktop, you can set a registry key to prevent using RTF.
https://www.slipstick.com/problems/outlook-is-sending-winmail-dat-attachments/#fails
This is complicated because the recipients marked your messages as SPAM and now you are a blocked sender and blacklisted.
The combination of Gmail and Outlook is unlikely to matter because you can receive mail, but you can not send anything - write if I understand correctly?https://answers.microsoft.com/en-us/outlook_com/forum/all/550-57520-message-blocked-because-it-contains/a96fc2d9-5d5a-42e9-8b95-27374f5f9590
https://support.microsoft.com/en-us/office/sender-support-in-outlook-com-05875e8d-1950-4d89-a5c3-adc355d0d652
https://support.microsoft.com/en-us/office/fix-outlook-com-email-sync-issues-d39e3341-8d79-4bf1-b3c7-ded602233642
- Yes, you are correct- ONLY w/ Outlook on my laptop. However, I am COMPLETELY able to send emails (from Outlook) using my phone.
Yes because IP. your computer is blacklisted for spam.
https://sender.office.com/Delist/DelistIP
https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/use-the-delist-portal-to-remove-yourself-from-the-office-365-blocked-senders-lis?view=o365-worldwide#verify-senders-before-removing-them-from-the-blocked-senders-list
