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Standardizing Exchange email attachment size delivery with Symantec Email gateway ?

People,

Can anyone here please let me know what is the best practice to standardize the email size limit for all Email Infrastructure application ?

the result from the Exchange Server 2010 Powershell:

[PS] C:\&gt;Get-ReceiveConnector | fl *MaxMessageSize*
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)

[PS] C:\&gt;Get-SendConnector | fl *MaxMessageSize*
MaxMessageSize : 100 MB (104,857,600 bytes)

[PS] C:\&gt;Get-TransportConfig | fl *Max*
MaxDumpsterSizePerDatabase      : 50 MB (52,428,800 bytes)
MaxDumpsterTime                 : 7.00:00:00
MaxReceiveSize                  : 50 MB (52,428,800 bytes)
MaxRecipientEnvelopeLimit       : 5000
MaxSendSize                     : 50 MB (52,428,800 bytes)
ExternalDsnMaxMessageAttachSize : 25 MB (26,214,400 bytes)
InternalDsnMaxMessageAttachSize : 25 MB (26,214,400 bytes)

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the value that I can see from the Symantec Email Gateway (Brightmail):
Both Inbound and Outbound: 20971520 bytes

Source: https://support.symantec.com/en_US/article.TECH95239.html

This was the configuration that I am now seeing in the Exchange Server produciton server left by my predecessor.

Do I have to match the size of the

"In/Outbound SMTP Configuration Maximum message size in bytes" in Symantec to be the same as the "In/ExternalDsnMaxMessageAttachSize " in Exchange server ?

and so if there is any modification that is required to change the value in Exchange or in Symantec Mail Gateway, does it cause any outage or requires a service to be reset ?

SOLUTION

suriyaehnop

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Albert Widjaja

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ok, so in this case I need to make it like the following:

"In/Outbound SMTP Configuration Maximum message size in bytes" in Symantec = 25 MB
"In/ExternalDsnMaxMessageAttachSize " in Exchange server = 20 MB

like 25 MB in total with added 5 MB as the buffer or inline attachment ?

Albert Widjaja

ASKER

What about the Transport Dumpster size ?
how big should I set it ?

my Mailbox servers are all stand alone no DAG.

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Jian An Lim

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Albert Widjaja

ASKER

Lim,

With my Exchange Server 2010 SP3 at the moment it is set to be 50 MB for some reason even if i do not have DAG in the two mailbox servers.

So if I change the size using the Exchange Management Console, is there any outage to the current email flow ?

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Jian An Lim

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Albert Widjaja

ASKER

Ah I see,

I'm afraid to touch it because I don't know how it will affect the exchange server mail flow company wide.

So making it 1.5 size of the maximum email size can be safely configured Through Exchange console GUI right ?

Jian An Lim

1.5 size is the dumpster.

maximum email size can be safely configured through Exchange Console.

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Jian An Lim

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Albert Widjaja

ASKER

Ah I see.

For the caching ? Which change is this that you mention ?

If I leave it like that, does it eventually change by itself or do I must restart the service manually ?

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Jian An Lim

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Albert Widjaja

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OK if that's the case then I'll leave it to change the value by itself since I'm in no rush to make it in effect.

I'm just standardising the values below to a certain number consistently:

[PS] C:\>Get-ReceiveConnector | fl *MaxMessageSize*
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)
MaxMessageSize : 100 MB (104,857,600 bytes)

[PS] C:\>Get-SendConnector | fl *MaxMessageSize*
MaxMessageSize : 100 MB (104,857,600 bytes)

[PS] C:\>Get-TransportConfig | fl *Max*
MaxDumpsterSizePerDatabase : 50 MB (52,428,800 bytes)
MaxDumpsterTime : 7.00:00:00
MaxReceiveSize : 50 MB (52,428,800 bytes)
MaxRecipientEnvelopeLimit : 5000
MaxSendSize : 50 MB (52,428,800 bytes)
ExternalDsnMaxMessageAttachSize : 25 MB (26,214,400 bytes)
InternalDsnMaxMessageAttachSize : 25 MB (26,214,400 bytes)

SOLUTION

Jian An Lim

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Albert Widjaja

ASKER

Yes Lim,

So I'd like to standardize for all internal and external email:

Symantec:

In/Outbound SMTP Configuration Maximum message size in bytes: 25 MB (26,214,400 bytes)

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Exchange Server:

MaxDumpsterSizePerDatabase      : 50 MB
MaxDumpsterTime                 : 7.00:00:00
MaxReceiveSize                  : 25 MB (26,214,400 bytes)
MaxRecipientEnvelopeLimit       : 5000
MaxSendSize                     : 25 MB (26,214,400 bytes)
ExternalDsnMaxMessageAttachSize : 25 MB (26,214,400 bytes)
InternalDsnMaxMessageAttachSize : 25 MB (26,214,400 bytes)

Open in new window

is that number above correct or do I need to change some values larger /smaller?

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Jian An Lim

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Albert Widjaja

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Thanks !