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Airin's Notes

Category: Email 🠪 Servers
Allow IP to send email to Exchange Online account
December 2, 2023

Login to Microsoft 365 Defender: Policies & rules --> Threat policies --> Anti-spam policies
https://security.microsoft.com/antispam

Edit the "Connection filter policy (Default)" or make a new rule to allow the IP address(s).

An example error:
Message Delivery Failure. Attempt (0): Could not connect to mail server for domain. The remote mail server could not be contacted at this time. Message has been requeued.

Keywords: Email, E-Mail, 365, Hosted, Whitelist, Allow


Category: Email 🠪 Servers
Exchange Server Health Checker Powershell Script
December 2, 2023

HealthChecker.ps1
https://microsoft.github.io/CSS-Exchange/Diagnostics/HealthChecker/


Category: Email 🠪 Servers
Gmail App Specific Password Page
February 20, 2024

https://myaccount.google.com/apppasswords


Category: Email 🠪 Servers
Gmail Backup and Restore
November 30, 2023

This free utility isn't easy to use, but can backup and restore data to/from gmail accounts, and preserves labels. It can restore MBOX files taken from Google Takeout.
https://github.com/GAM-team/got-your-back


You can also use Thunderbird or Outlook to set up two accounts, and manually backup all folders.

https://takeout.google.com/settings/takeout


Keywords: Google Mail, Gmail, Backup, Restore, Sync, Clone, Archive, Thunderbird


Category: Email 🠪 Servers
Google Workspace - Add free account for Admin
November 30, 2023

These steps let you add free accounts (without email access) that you can set as Administrator.
https://knowledge.workspace.google.com/kb/how-to-create-a-super-admin-user-without-a-google-workspace-subscription-000009398

Keywords: Gmail, Google Workspace, Free, Superuser, admin, license


Category: Email 🠪 Servers
Google Workspace - Redirect specific matching emails, incoming or outgoing
November 29, 2023

Google Admin --> Apps --> Google Workspace --> Gmail --> Compliance --> Content Compliance
https://www.goldyarora.com/selective-email-forwarding/



Keywords: Forward, Delete, Redirect, Gmail, Google Apps, Email, Block


Category: Email 🠪 Servers
hMailServer - Free + Open Source
November 27, 2023

https://www.hmailserver.com/functionality


Category: Email 🠪 Servers
Microsoft 365 Exchange - Outlook asking for password - Something went wrong [1001]
November 24, 2023

https://learn.microsoft.com/en-us/answers/questions/1144046/outlook-365-application-error-1001-mail-is-not-syn
sfc /scannow
Reboot


Another possible fix:
I deleted the GUID key from HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity\Identities
Rebooted, worked after that


Keywords: Microsoft Outlook, Exchange, 365, Email, Password, Needs Updating


Category: Email 🠪 Servers
Microsoft Exchange Online - Create Catchall Account
December 1, 2023

1: Change domain to "Internal relay"
2: Create Distribution Group with all accounts in it (or use Dynamic Group).
3: Create mailbox (probably a Shared mailbox) for catchall.
4: Create a rule to move all messages to catchall account if the recipient is NOT a part of above group.
https://www.godaddy.com/help/catch-all-email-not-supported-with-microsoft-365-40130


keywords: catch-all


Category: Email 🠪 Servers
Migrate from local Exchange to Microsoft 365
November 29, 2023

It is best to do this over a long weekend, if possible.
Make a backup of Exchange first.
Export Public Folders to PST
Start migration using Microsoft 365, from Exchange Admin, use Migration feature.





Keywords: Office 365, Exchange Online


Category: Email 🠪 Servers
Migrate to Cloud Email Service
November 30, 2023

Migrate to Microsoft:
https://docs.microsoft.com/en-us/exchange/mailbox-migration/migrating-imap-mailboxes/migrate-g-suite-mailboxes
https://docs.microsoft.com/en-us/exchange/mailbox-migration/migrating-imap-mailboxes/prepare-gmail-or-g-suite-accounts



Keywords: Google Gmail, Google Apps, Microsoft Exchange Online, Hosted Exchange, Outlook


Category: Email 🠪 Servers
Office 365 won't allow SMTP from mail client
November 29, 2023

You need to enable SMTP sending from Microsoft 365 Admin Center
Go to User list, click on a user. Click on Mail tab, then Manage email apps, then check Authenticated SMTP.
https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/authenticated-client-smtp-submission


Keywords: SMTP, Send Mail, Email, Authentication, OATH2, Thunderbird


Category: Email 🠪 Servers
Online Email Services
November 29, 2023
Free:
ProtonMail - 500MB Free, limited app support without Paid version. Great encryption + Security
https://protonmail.com/

Google Gmail - 15GB free, great app support, limited privacy
https://mail.google.com/

Hotmail / Outlook.com

Yahoo Mail

SMTP2Go.com - Free SMTP server for 1000 per month, paid for more
https://www.smtp2go.com/


Paid:
ProtonMail - 4 Euros per month for realistic features
https://protonmail.com/

iCloud - It does allow a custom domain name with paid ...<Too long, click to read the rest>

Category: Email 🠪 Servers
sbcglobal.net Email via IMAP/POP3
December 1, 2023

Goto yahoo.com
Login to the account, go to Account Info. It should redirect you to AT&T.
Scroll down to "Manage secure mail key", create a special password to use for IMAP/POP3


Category: Email 🠪 Servers
Stop Outlook from putting Meeting Invitations on the Calendar
November 27, 2023

The only working solution I found is to do this on Exchange Admin Center (for all users on the domain).

https://admin.exchange.microsoft.com/#/transportrules
Go to Mail Flow --> Rules
Add a rule: Is message type 'Calendaring'
Redirect the message to other user, or delete the message.
This will have the effect that the user will NOT be able to see the meeting request. If you redirect it to another user, they will be able to see it, AND it will show up on their calendar.

Keywords: Outlook, Exchange,...<Too long, click to read the rest>


Category: Email 🠪 Servers
Yahoo blocking emails
January 23, 2024

https://senders.yahooinc.com/best-practices/

Delivery has failed to these recipients or groups:
Your message couldn't be delivered. Despite repeated attempts to contact the recipient's email system it didn't respond.
Contact the recipient by some other means (by phone, for example) and ask them to tell their email admin that it appears that their email system isn't accepting connection requests from your email system. Give them the error details shown below. It's likely that the recipient's email admin...<Too long, click to read the rest>





This site is meant to be used as a reference for myself, although others may find it useful. I use it to keep track of certain fixes, software, and other solutions which I may need while assisting customers. The page layout is pure HTML/CSS and is kept simple to optimize loading time and fast results.

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