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"Spambox" Folder in Outlook
"The Microsoft Exchange Administrator has made a change that requires you quit and restart Outlook"
#5.0.0 smtp; 5.3.0 - Other mail system problem 554-'5.4.6 Message exceeded 50 hops, this may indicate a mail loop
250 2.1.5 RESOLVER.OOF.IntToExt; handled internal OOF addressed to external recipient
402 4.2.0 Recipient deferred because there is no Mdb
403 4.7.0 encryption too weak 0 less than 128
421 4.3.2 Service not active
421 4.3.2 Service not available
421 4.4.2 Connection dropped due to TimedOut.
441 4.4.1 Error all outgoing mails are in Queue
441 4.4.1 Error encountered while communicating with primary target IP address
450 4.4.318 Connection was closed abruptly
450 4.4.318 Connection was closed abruptly
450 4.5.0 no recipient succeeded from Exchange Online to Exchange 2013 on-prem
450 4.7.1 error client host rejected: cannot find your hostname
450 4.7.25 Client host rejected
451 4.4.0 SMTPSEND SuspiciousRemoteServerError; remote server disconnected abruptly; retry will be delayed};[FQDN=...};{ip=....}]
451 4.7.0 Temporary server error. Please try again later. PRX2
451.4.4.0 Primary target IP address responded with "421.4.2.1. Unable to connect." Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts or delivery failed to all alternate hosts."
500 5.3.3 Unrecognized command error
550 - 550-Requested action not taken: mailbox unavailable 550 invalid DNS MX or A/AAAA resource record )
550 - No such domain at this location
550 5.4.4 Error when using Contact to Relay mail
550 5.7.1 Sender ID (PRA) Not Permitted
554 5.7.1 This message has been blocked because the HELO/EHLO domain is invalid from specific domain
A communication failure occurred during the delivery of this message. Please try to resend the message later. If the problem continues, contact your helpdesk.
A valid Migration mailbox could not be found for this organization
Add information to a Transport rule from CSV
Autodiscover DNS records for multiple domain names
Backpressure activated after Exchange CU5 install-version buckets
Block incoming calendar / meeting requests to a specific mailbox / user using transport rules or an Outlook rule?
Can I use a different port (than 25) for my Office 365 Exchange Online Protection to my on premise server? My ISP is blocking port 25.
Cannot enable custom DSN
Check which folder the message was delivered
Communication Error
configure SMTP authentication for exchange 2013
Connection refused on port 25
Criteria for determining Directionality
Delivery Report Error '[{LRT=};{LED=};{FQDN=};{IP=}]'
Delivery report shows status of Pending for external address. Email sent to both internal and external addresses.
Disable notification - "Your meeting was forwarded"
Disable Read Receipts but allow Out of Office replies
Disable/Configure back pressure
Does the mail flow rule able to identify the type of Calendaring message?
Don't see TlsCertificateName when running Get-ReceiveConnector
dsn=5.0.0, stat=Service unavailable
Duplicate disclaimer generated for new emails
E-mails are not going out. all emails stuck in queue exchange 2013
Email delivery fails [{LRT=};{LED=550 5.2.3 RESOLVER.RST.RecipSizeLimit; message too large for this recipient};{FQDN=};{IP=}]
Email Encryption with Shared Mailboxes
Emails missing with HADISCARD ExplicitlyDiscarded in messagetracking
Emails not going through, ExplicitlyDiscarded, HADISCARD
EMAILS Stuck in QUEUE - EXCHANGE 2013
Enable auth login on exchange 2013 receive connector
Encrypted emails are not showing up in a shared mailbox on outlook client but are showing up in Outlook web app
Error 554 5.4.6 Hop count exceeded - possible mail loop
Error returned from SMTP Server. The error message was: [Exception reading response]. The message could not be sent.
Error sending emails to Internet: Failed to connect. Winsock error code: 10051
Error sending message from Powershell
error: 550 5.6.0 CAT.InvalidContent.Exception: TextConvertersException
Event 12017: An internal transport certificate will expire soon.
Event 36875: remote server requested SSL - which remote server?
EventID HAREDIRECTFAIL
Exchange 2010 SPF Record
Exchange 2010 The remote pipeline has been stopped. It was running the command
Exchange 2013 CAS server returned '500 Message rejected'
Exchange 2013 Malware Filter and ScanningProcess.exe
Exchange 2013 On Prem - OOTO / NDR Replies Fail DMARC Authenication Outbound
Exchange 2013 relaying (Inbound Proxy Internal Send connector acceptint external IPs?)
Exchange 2013 SMTP Relay
Exchange 2013- Forward Email Account to Groups or Multiple Users
Exchange 2013- Message tracking- EventId FAIL Source SMTP
Exchange 2013: How To Change Email Attachment Size Limit
Exchange 2013/2016 - Blocking recipients that are not listed in the global address book
Exchange 2016 test Mail Flow Error
Exchange Server 2013: Failed to connect. Winsock error code: 10060, Win32 error code: 10060.
Exchange server and DKIM
Exchange server is receiving messages but not sending them
Exchange Server not sending to Gmail
Exchange Server Using Wrong Certificate for TLS?
Exchange Toolbox Error when launching
Exchange Transport Content Filering False Positive
External e-mail disclaimer transport rule is being applied to SMTP relay messages from application servers within network
FIXED - Exchange 2013 - Can I Recreate Default Frontend Receive Connector SAFELY?
Forwarding emails from one distribution group to another distribution group
FQDN on EHLO for External
Free Busy federation between two office365 domain
hard direct fail and no available shadow servers
Help! Event ID 12014 - Microsoft Exchange 2013 could not find a certificate!?!?!?
How do I delete message from Submission queue
How this spoof worked?
How to change smtp port from 25 to 587 in Exchange 2013
How to configure Edge Transport server to relay external domains
How to Track the Original Location of an Email via its IP Address
HubTransport and FrontEnd Transport Receive Connectors
Ignored X-OriginatorOrg header value 'domain name' because session capabilities do not allow it
Inbound Proxy Probe Undeliverable (Health Mailbox)
Internal email goes to junk folder
Internal MX record
Invalid HELO name (See RFC5321 4.1.1.1)
LDAP Server is unavailable error on Edge Transport server.
List of who received a message to a dynamic distribution group?
local loop was detected--Exchange server 2013 and Exchange online hybrid
Log onto incoming mail server (POP3): Your server does not support the connection encryption type you have specified. Try changing the encryption method. Contact your mail server administrator or Internet service provider (ISP) for additional assistance.
Mail ending up in drafts
Mail flow issue from On-prem to Office 365 urgent.
Mail flow issues between Office 365 Exchange online and On-Prem Exchange Server.
Mail lost during Exchange Server Down
Mail received but server sends back '5.4.7 Delivery expired' mesage
Mail Showing has delivers but not received to user inbox
Mail-enabled public folders not receiving external mail.
mail.protection.outlook.com Delisting
mailbox recipient does not have a mailbox database
Mailbox Server Role Services not running: MSExchangeDelivery
mailflow broken - error 451 4.7.0
Mails not getting delivered
Maximum concurrent connections between outlook and exchange server
MaxInboundConnectionPerSource = Unlimited. EventID: 1021
Meeting invites goes to deleted items
Members of distribution groups receive a duplicate email when they are also a recipient
Message rerouted and delayed by store driver.
Message trace details
Message Tracking for Rejected Messages
Messages stuck in "Retry" in Submission Queue - Exchange 2013
Messages stuck in DNS connector delivery
Messages stuck in Queue Last Error: 452 4.3.1 Insufficient system resources
Microsoft Exchange Server Auth Certificate about to Expire on the 22nd !
Microsoft Filtering Management Service service can't start with error 0x80004005: Unspecified error
Microsoft.Exchange.Data.TextConverters.TextConvertersException: Input document is too complex
MSExchangeTransport service failed to start services
Multiple IPs for Single MX record
multiple ptr for single IP address
NDR 502 5.5.1 command not implemented
Need some users to be able to connect/send via SMTP from outside- event 1018 does not have submit permissions on SMTP Recieve connector
Office apps unable to access or connect to RMS server(On-Prem).
Powershell script to add multiple domains to a transport rule
Providing the send as access rights for a user from powershell
PTR Record
Publish to GAL button not available
Recipient deferred because there is no Mdb
Remote Server returned '420 4.2.0 Recipient deferred because there is no Mdb'
Remote Server returned '530 5.7.1 Client was not authenticated'
Remote Server returned '550 5.1.11 RESOLVER.ADR.ExRecipNotFound
Remote Socket Error Exchange 2013 SMTP Receive LOG
Remove Expired Certificate
Remove Internal Exchange Server Names and IP Addresses from Message Headers on Exchange server 2013
Renaming the public folder mailbox
Replace Return-Path using Transportrule
Restricting one external domain to send email to internal distribution group
Rule to delete emails with utf-8 encoded subjects
Schannel Fatal Alert 46
Send as is not working when mailbox is hidden from address list
Send As or Send On Behalf - Permissions
Send connector for specific email domain
Send on Behalf of Does not appear in From:
Sender and Recipient has same email address
Sending warning to sender for external email address
Sensitive Word List - Content Filter
Server components states keep getting marked at inactive
server error 452 4.5.3 too many recipients
Server Error 550 5.1.2 Unknown Host or Domain
Server returned '400 4.4.7 Message delayed
Set-Mailboxautoreplyconfiguration LINE BREAK issue
Setting a delay on all emails sent
Setting Maximum concurrent smtp outbound connection limits
Shadow redundancy eventID 22004 keep happening after Exchange 2013 CU17 upgrade
Shannel 36887 - Missing Certificates in Trusted Root Certificate Authority Store
SMTP Relay Configuration on Default Receive Connector
SMTP transient error: 421 Service not available
Some distribution lists not working when sent over SMTP using C#
Specific mails are not delivered to the user inbox. "Message delivery is taking longer than expected".
SPF Record UDP Truncated Errors
SSL Certificate: Revocation Check Failed
STARTTLS not advertised on relay receive connector
Target host responded with Error. 535 5.7.3 Authentication Unsuccessful.
The recipient's email system isn't accepting messages now. Please try resending this message later or contact the recipient directly
The server response was: #5.1.0 Address rejected.
The server response was: 4.4.2 Message submission rate for this client has exceeded the configured limit
The STARTTLS certificate will expire soon
The store ID provided isn't an ID of an Item.
This message can't be moderated because the approval system is too busy and can't accept messages now. Please try resending this message later, or contact the recipient directly.
This message wasn't delivered to anyone because it's too large. The limit is 10 MB. This message is 13 MB
TLS negotiation failed with error AlgorithmMismatch
Transient mail flow problem (Source: STOREDRIVER, EvendId: SUBMITDEFER )
Transport rule to block CC'd email to external email address
Transport rules using distribution group as recipient
Unable to receive emails from office 365 using TLS 1.2
Unable to receive external emails to my Exchange 2013
Unable to send emails to internet after Exchange CU15 upgrade
Unable to start Microsoft Exchange Transport and Microsoft Filtering Management Service (FMS)
Undocumented EventID in the message tacking logs: HAREDIRECTFAIL
View the audit logs for Transport Rules
Virtual Exchange 2013 CU1 raises Receive(SocketError) in SMTP log
where is this exceed header size message coming from?
X-Auto-Response-Suppress DR, OOF, AutoReply?
X-Forwarded-For Header in mail headers
X-MS-Exchange-Organization-AuthAs is configured as Internal other than Anonymous from internet mails
X-MS-Exchange-Organization-AuthMechanism: possible values
You don't have permission to perform this action - OWA error while sending mails
Your message can't be delivered because you do not have permissions to send to this email address.