Description: Requested action aborted: error in processing. What does this mean? When attempting to process the message, the receiving mailserver’s rules prevented it from processing it for delivery. Rules such as SPF verification can create this error. How to fix SMTP Error 451? Depending on the exact message given, it’s most likely related to the […]

Description: Requested action not taken: insufficient system storage. What does this mean? Your mail server is ‘overloaded’. This could be caused by too many messages attempting to send at once, the server being out of memory or storage space. How to fix SMTP Error 452? Review your current mail queue and log to ensure adequate […]

Description: Timeout connection problem. What does this mean? This error has been provided by a GroupWise server, only the server administrators of the receiving mail server will be able to confirm the actual issue present. However, this is typically as a result of being blocked by the recipient’s firewall/filter or the server is experience a […]

Description: Service not available, closing transmission channel. What does this mean? This is an unfortunately, open ended error. Most commonly this is in relation to the destination server not being “reachable”, however it may also mean that your sending mail server is not “reachable”. The latter of the two options is less common, unless a […]

Description: Not enough storage or out of memory. What does this mean? The actual message may seem a little misleading. This is not in relation to the receiving/destination server running out of memory or not having enough storage for delivery. This is actually in regards to the amount of recipients the email message has. Suggesting […]

Description: Recipients Exchange Server incoming mail queue stopped. What does this mean? Like almost all Microsoft Errors, the description doesn’t give you much. It’s typically due to a connection problem, however the only way to confirm the issue will be to contact the server administrators. How to fix SMTP Error 432? Unfortunately, with out knowing […]

Description: Recipients mail server is not responding What does this mean? This error isn’t as specific as hoped, however it does confirm the issue is not regarding your server (or outgoing mail server). The issue is specifically regarding the recipient’s incoming mail server. How to fix SMTP Error 441? Knowing that the issue is on […]

Description: Connection dropped during transmission. What does this mean? Everything was processing successfully, with no errors reported from the recipient server, until an abrupt connection issue. This is almost always related to networking misconfiguration or downtime. How to fix SMTP Error 442? Check your computer’s local internet connection, after confirming no local network issues exist, […]

Description: The maximum hop count was exceeded for the message: an internal loop has occurred. What does this mean? Your mail server was unable to determine where to send the email. This can be caused by numerous redirects and different intermediate mail exchanges. How to fix SMTP Error 446? Contact your SMTP or Mail Exchange […]

Description: Your outgoing message timed out because of issues concerning the incoming server. What does this mean? Your mail server was not able to process the entire list of email recipients intended for the message. Some configurations have a recipient maximum that will cause this error. How to fix SMTP Error 447? Reduce the number […]