I am having an issue with setting the max send and receive size on Exchange 2013.  I keep getting the following error when I attempt to send a 20 meg file server to an internal exchange account OR if I attempt to send a 20 meg file from the exchange server to an external account:  #550 5.3.4
ROUTING.SizeLimit; message size exceeds fixed maximum size for route ##

I have checked the mail sizes and below is the report.  I currently have both send and receive set to 100MB.  Is there some other setting in 2013 that I am not aware of?

AnonymousSenderToRecipientRatePerHour                       : 1800
ClearCategories                                             : True
ConvertDisclaimerWrapperToEml                               : False
DSNConversionMode                                           : UseExchangeDSNs
ExternalDelayDsnEnabled                                     : True
ExternalDsnDefaultLanguage                                  :
ExternalDsnLanguageDetectionEnabled                         : True
ExternalDsnMaxMessageAttachSize                             : 100 MB (104,857,600 bytes)
ExternalDsnReportingAuthority                               :
ExternalDsnSendHtml                                         : True
ExternalPostmasterAddress                                   :
GenerateCopyOfDSNFor                                        : {}
HygieneSuite                                                : Standard
InternalDelayDsnEnabled                                     : True
InternalDsnDefaultLanguage                                  :
InternalDsnLanguageDetectionEnabled                         : True
InternalDsnMaxMessageAttachSize                             : 100 MB (104,857,600 bytes)
InternalDsnReportingAuthority                               :
InternalDsnSendHtml                                         : True
InternalSMTPServers                                         : {}
JournalingReportNdrTo                                       : <>
LegacyJournalingMigrationEnabled                            : False
LegacyArchiveJournalingEnabled                              : False
LegacyArchiveLiveJournalingEnabled                          : False
RedirectUnprovisionedUserMessagesForLegacyArchiveJournaling : False
RedirectDLMessagesForLegacyArchiveJournaling                : False
MaxDumpsterSizePerDatabase                                  : 18 MB (18,874,368 bytes)
MaxDumpsterTime                                             : 7.00:00:00
MaxReceiveSize                                              : 100 MB (104,857,600 bytes)
MaxRecipientEnvelopeLimit                                   : 500
MaxRetriesForLocalSiteShadow                                : 2
MaxRetriesForRemoteSiteShadow                               : 4
MaxSendSize                                                 : 100 MB (104,857,600 bytes)
MigrationEnabled                                            : False
OpenDomainRoutingEnabled                                    : False
RejectMessageOnShadowFailure                                : False
Rfc2231EncodingEnabled                                      : False
SafetyNetHoldTime                                           : 2.00:00:00
ShadowHeartbeatFrequency                                    : 00:02:00
ShadowMessageAutoDiscardInterval                            : 2.00:00:00
ShadowMessagePreferenceSetting                              : PreferRemote
ShadowRedundancyEnabled                                     : True
ShadowResubmitTimeSpan                                      : 03:00:00
SupervisionTags                                             : {Reject, Allow}
TLSReceiveDomainSecureList                                  : {}
TLSSendDomainSecureList                                     : {}
VerifySecureSubmitEnabled                                   : False
VoicemailJournalingEnabled                                  : True
HeaderPromotionModeSetting                                  : NoCreate
Xexch50Enabled                                              : True

Hi Landfisch,

there is a limit for outgoing messages(sendconnector), incominig messages (receive connector) as well as an iternal message size (transport config) in Exchange.
Please see https://technet.microsoft.com/en-us/library/bb124345(v=exchg.150).aspx

please also see https://social.technet.microsoft.com/Forums/en-US/f82f593a-adb0-4874-ae2e-b1389367611a/emails-with-attachments-over-10mb-getting-bounced?forum=exchangesvrgeneral

cmdlets are:

Get-transportrule | fl AttachmentSizeOver,MessageSizeOver

Get-sendconnector | fl MaxMessageSize

Get-receiveconnector | fl MaxMessageSize

Please check if the ...size parameters matched your requirements

Regards,
Martin

Hello Landfish,

Good Day...

The output gives the information that Size limit set for Receive and Send is 100 mb, but setting could have changed. So you can follow the below steps to resolve the issue. 

There are basically three places where you can configure default message size limits on Exchange:

Organization transport settings
Send/receive connector settings
User mailbox settings.

To check your servers current limit you can open Exchange Management Shell

Try the below commands to check the Message quota size limit

get-transportconfig | ft maxsendsize, maxreceivesize
get-receiveconnector | ft name, maxmessagesize
get-sendconnector | ft name, maxmessagesize
get-mailbox Administrator |ft Name, Maxsendsize, maxreceivesize

To change the above size limits based on your requirement.

Set-TransportConfig -MaxSendSize 200MB -MaxReceiveSize 500MB (Size is based on your requirement)

Attachment size limit

To set up the rule you can use the below PowerShell cmdlet, as the method is quite simple

New-TransportRule -Name LargeAttach -AttachmentSizeOver 20MB -RejectMessageReasonText "Message attachment size over 20MB - email rejected."

For More info https://technet.microsoft.com/en-us/library/bb124708(v=exchg.150).aspx

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