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Home » Kerio User Forums » Kerio Connect » No logs on our KC server or bounce messages to sender for incoming SMTP size limits? (Sender or Receiver not aware if the email was sent or not.)
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puretech

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We had a customer complaining we are not replying to his emails and upon many troubleshoot trials I thought let me try sending a large file from external email provider to our domain, just to see if i will get any bounce back message or if i can see it in the log somewhere that tells incoming mail was rejected because of the size. But to my surprise, I have not received any bounce back message (as a sender) and no logs anywhere (as a recipient)

My question is: isn't it important to have at least a log if not an error message to the sender about the limit?

Or do I need to enable it from somewhere i can't see?

Edit: we are using
KC 8.1.1 (1374)
Windows Server 2008 R2, x86_64

[Updated on: Wed, 26 June 2013 11:29]

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Charles B

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It shows up in my Warning log, example: "[24/Jun/2013 14:34:06] SMTP message too big (size 29302396 bytes, maximum 20971520 bytes). Message from" etc...

I don't recall ever having to set any rules or checkboxes to make it do so, it has always been there as long as I can recall. The sender gets a bounce message too.

Mid 2015: Quit Kerio and moved to Exchange 2013 and Meraki.
Kerio Control 8.4.0--Used since it was WinRoute, many years ago
Kerio Connect 8.4.0 on Ubuntu. Bought Connect just in time for the switch to NO SUPPORT(aka pay for support). Not. Happy.
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puretech

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Thanks Charles, is this error message for outgoing or incoming?

I know there are for outgoings because we have set domain outgoing send limits for users. So the error for that is like this:
Quote:
[03/Jun/2013 09:43:11] Message from <xxx@xx> is too big: maximum 16777216 bytes (see user/domain limit)


If you are talking about incoming size limit message, then I am not getting it.

Could someone with the same KC version check this for me please? Just to see if it is a bug in the version? KC version 8.1.1

Thanks
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zebby

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We're using 8.1.1 and everything is working as normal.
The entry rejecting the message is logged in the warning log and the sender gets a notification
Delivery to the following recipient failed permanently:
 
     user<_at_>yourdomain.com
 
Technical details of permanent failure:
 Google tried to deliver your message, but it was rejected by the server for the recipient domain yourdomain.com by mail.yourdomain.com.
 
The error that the other server returned was:
 552 5.3.4 Message too big (maximum 15728640 bytes)
 
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Charles B

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puretech wrote on Thu, 27 June 2013 02:23
Thanks Charles, is this error message for outgoing or incoming?


The example I posted is incoming. As in from an external mail server.
I'm running version 8.1.1.

Internal/outgoing warnings don't include the message size, and look like this (exactly as yours do):
[21/Jun/2013 11:21:37] Message from <user<_at_>CharlesB.com> is too big: maximum 5242880 bytes (see user/domain limit)



Have you double checked your server maximum setting? ( Configuration > SMTP Server > Security Options > "Limit maximum incoming SMTP message size to: ")

Mid 2015: Quit Kerio and moved to Exchange 2013 and Meraki.
Kerio Control 8.4.0--Used since it was WinRoute, many years ago
Kerio Connect 8.4.0 on Ubuntu. Bought Connect just in time for the switch to NO SUPPORT(aka pay for support). Not. Happy.
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puretech

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Thanks a lot Zebby and Charles B.

I will test it again and maybe try to re-install it again on a development and see.
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