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Message exceeds max hop limit

[LIM, Hardy]
Hardy LIM
Newbie
Newbie
Posts: 6
Hardy LIM - 12:10am, Apr 19 2021

I have got the following message in the bad queue

message exceeds max hop limit

What could be wrong ?

Any setting are missing or not correct ?

MD v17.5.2

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Arron Caruth - Apr 19, 2021 7:42 am (#1 Total: 2)  

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Posts: 1
 
That error means that the message has been processed by too many mail servers.  MDaemon counts the number of times a message has been processed by a mail server and limits it to try to prevent mail loops.  
 
From the help file:
 
Route message to bad queue if hop count exceeds (5-100)
RFC standards stipulate that a mail server must stamp each message each time that it is processed. These stamps can be counted and used as a stopgap measure against recursive mail loops that can sometimes be caused by errant configurations. If undetected, these looping message delivery cycles will consume your resources. By counting the number of times the message has been processed, such messages can be detected and placed in the bad message directory. The assumption is that if a message hasn't reached its recipient after being processed by a given number of mail servers then there is probably a mail loop in progress. Most likely, the default setting of this control should be sufficient to prevent mail loops and will not need to be changed.
 
Check the message headers, they will show you which mail servers have processed the message which should help to determine if the message is actually looping or if it was just routed through more mail servers than normal.
 
Another option might be that MDaemon has been configured to not allow enough hops.  This can be configured by going to Queues / Mail Queues & DSN / Retry.  The value for "Route message to bad queue if hop count exceeds" has a default value of 20. In general I would not advise setting it higher than 20 as almost all mail should be able to be delivered within 20 hops.  
 
If you'd like more assistance, please post the message headers so that we can see what is happening with the message.
 
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On Mon, 19 Apr 2021 00:10:46 -0500, "lists-md-support@mdaemon.com (Hardy LIM)" <lists-md-support@mdaemon.com> wrote:
I have got the following message in the bad queue

message exceeds max hop limit

What could be wrong ?

Any setting are missing or not correct ?

MD v17.5.2
 
View/reply at Message exceeds max hop limit
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Luca Rasca - Dec 21, 2021 5:50 pm (#2 Total: 2)  

 

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Luca Rasca
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Newbie
Posts: 20
Hi, this problem of hops exceeded also happened to a client of mine . Attached the header. Could you please take a look and tell me what caused the problem ?

Also I dont understand: if the email after so many hops was finally arrived at the destination (a local mdaemon user), why Mdademon put it in the "Bad Queue" instead of releasing it to the recipient?

Thank you.

[Last Editor: Luca Rasca, Dec 22, 2021 1:51 am. Total Edits: 1]

Attachments:

hops exceeded.txt (8 KB) (76 Downloads)




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