Legacy Protocols Blocking

Nagasai Andra 101

Hi team

As Microsoft is planning to Block the Legacy protocols in the month of October , We have an internal application called T-CRM that is used to sync contacts from CRM application to the Outlook & also if any meeting scheduled in CRM will reflect in Outlook .

To use T-CRM with Outlook Legacy protocols are being used . Wanted to know if there is any possibility of using legacy protocols even after Microsoft blocked it globally for all the tenants.

Regards
Naga sai

Kael Yao-MSFT 37,496 Reputation points Microsoft Vendor

2022-05-02T07:39:58.537+00:00

Hi @Nagasai Andra

Just checking in to see if above information was helpful. Please let us know if you would like further assistance.
If the issue has been resolved, please accept the helpful replies as answers, this will make answer searching in the forum easier and be beneficial to other community members as well.
Nagasai Andra 101 Reputation points

2022-08-29T10:38:42.013+00:00

Hi

Thanks for the update ,

As MS planned to deprecate legacy protocols , Does it include (IMAPS , IMAPTLS , POP3S & POP3TLS )

Regards
Naga sai

1 answer

Andy David - MVP 141.5K Reputation points MVP

2022-04-26T16:53:58.15+00:00

None after October :)
https://techcommunity.microsoft.com/t5/exchange-team-blog/basic-authentication-and-exchange-online-september-2021-update/ba-p/2772210

The vendor will need to ensure its using Modern Auth since they should know people wont be able to use their product after the cut off date.
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2 people found this answer helpful.
Nagasai Andra 101 Reputation points

2022-08-29T10:38:24.943+00:00

Hi All

Thanks for the update ,

As MS planned to deprecate legacy protocols , Does it include (IMAPS , IMAPTLS , POP3S & POP3TLS )

Regards
Naga sai

Andy David - MVP 141.5K Reputation points MVP

2022-08-29T11:15:16.743+00:00

Yes.
October 1st the deadline

Nagasai Andra 101 Reputation points

2022-09-08T12:33:33.71+00:00

Hi

Thank you for the update
Wanted to know one more thing , LDAP Auth will also be deprecated ?

Regards
Naga sai

Andy David - MVP 141.5K Reputation points MVP

2022-09-08T12:39:59.503+00:00

LDAP auth is not an Exchange Online Protocol:

https://learn.microsoft.com/en-us/azure/active-directory/fundamentals/auth-ldap

Nagasai Andra 101 Reputation points

2022-09-13T11:27:23.053+00:00

Hi David

Thanks for your prompt response ,
In our Organization we use Exchange servers mainly to have a mail flow to internal applications using SMTP by mentioning port number 25 .

Post October 1st will this mail flow also be effected ? Can you please update

Regards
Naga sai

Andy David - MVP 141.5K Reputation points MVP

2022-09-13T11:31:04.41+00:00

This will not be affected .
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