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Exchange 2010 with Forefront, can't receive large attachments from outside ONLY.

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I am able to send and receive large files internally now. Also I am able to send large files to the outside. But I can't receive anything larger then defaulted 10mb. My Environment is 2 Edge boxes, 2 cas HT boxes, 2 mx DB boxes.

I was asked to increase the size of the emails my organization can receive, I went ahead and adjusted the following:

EDGE
1. Receive and Send connectors, set to 40mb.
2. Forefront -->Advanced Options--> Threshold Levels--> all max sized are at 50mb.
CASHT
1. Organization Configuration--> Hub Transport -->Send Connectors and GLOBAL SETTINGS
2. Server Configuration--> HUB Transport--> all the connectors
3. Recipient Configuration--> Mailbox --> users. 

All sizes are set to 40mg!

I am able to send large files (24354K), but  not able to receive 

The following is output from Get-TransportConfig:

ClearCategories                     : True
ConvertDisclaimerWrapperToEml       : False
DSNConversionMode                   : UseExchangeDSNs
ExternalDelayDsnEnabled             : True
ExternalDsnDefaultLanguage          :
ExternalDsnLanguageDetectionEnabled : True
ExternalDsnMaxMessageAttachSize     : 40 MB (41,943,040 bytes)
ExternalDsnReportingAuthority       :
ExternalDsnSendHtml                 : True
ExternalPostmasterAddress           :
GenerateCopyOfDSNFor                : {}
HygieneSuite                        : Standard
InternalDelayDsnEnabled             : True
InternalDsnDefaultLanguage          :
InternalDsnLanguageDetectionEnabled : True
InternalDsnMaxMessageAttachSize     : 40 MB (41,943,040 bytes)
InternalDsnReportingAuthority       :
InternalDsnSendHtml                 : True
InternalSMTPServers                 : {}
JournalingReportNdrTo               : 
LegacyJournalingMigrationEnabled    : False
MaxDumpsterSizePerDatabase          : 60 MB (62,914,560 bytes)
MaxDumpsterTime                     : 7.00:00:00
MaxReceiveSize                      : unlimited
MaxRecipientEnvelopeLimit           : unlimited
MaxSendSize                         : unlimited
MigrationEnabled                    : False
OpenDomainRoutingEnabled            : False
Rfc2231EncodingEnabled              : False
ShadowHeartbeatRetryCount           : 12
ShadowHeartbeatTimeoutInterval      : 00:15:00
ShadowMessageAutoDiscardInterval    : 2.00:00:00
ShadowRedundancyEnabled             : True
SupervisionTags                     : {Reject, Allow}
TLSReceiveDomainSecureList          : {}
TLSSendDomainSecureList             : {}
VerifySecureSubmitEnabled           : False
VoicemailJournalingEnabled          : True
HeaderPromotionModeSetting          : NoCreate
Xexch50Enabled                      : True

Also my antispam cloud service sent me the following logs:

10:10:38.662 4 SMTP-037868(workemail.com.smtpip.com:25) cmd: MAIL FROM:<USER@gmail.com> SIZE=34140018
10:10:38.771 4 SMTP-037868(workemail.com.smtpip.com:25) rsp: 250 2.1.0 Sender OK
10:10:38.771 4 SMTP-037868(workemail.com.smtpip.com:25) cmd: RCPT TO:<work@workemail.com> NOTIFY=FAILURE,DELAY
10:10:38.896 4 SMTP-037868(workemail.com.smtpip.com:25) rsp: 250 2.1.5 Recipient OK
10:10:38.896 4 SMTP-037868(workemail.com.smtpip.com:25) cmd: DATA
10:10:39.021 4 SMTP-037868(workemail.com.smtpip.com:25) rsp: 354 Start mail input; end with <CRLF>.<CRLF>
10:13:57.661 3 SMTP-037868(workemail.com.smtpip.com:25) abort request
10:13:57.661 3 SMTP-037868(workemail.com.smtpip.com:25) write failed. Error Code=socket aborted
10:13:57.661 3 SMTP-037868(workemail.com.smtpip.com:25) [1959469085] failed to send. Error Code=socket aborted


AND 

Also another error from Appriver:
08:48:34.798 4 SMTP-929371(workemail.com.smtpip.com:25) cmd: MAIL FROM:<user@gmail.com> SIZE=34148430
08:48:34.907 4 SMTP-929371(workemail.com.smtpip.com:25) rsp: 250 2.1.0 Sender OK
08:48:34.907 4 SMTP-929371(workemail.com.smtpip.com:25) cmd: RCPT TO:<work@workemail.com> NOTIFY=FAILURE,DELAY
08:48:35.032 4 SMTP-929371(workemail.com.smtpip.com:25) rsp: 250 2.1.5 Recipient OK
08:48:35.032 4 SMTP-929371(workemail.com.smtpip.com:25) cmd: DATA
08:48:35.157 4 SMTP-929371(workemail.com.smtpip.com:25) rsp: 354 Start mail input; end with <CRLF>.<CRLF>
08:53:34.718 3 SMTP-929371(workemail.com.smtpip.com:25) write failed. Error Code=connection reset by peer
08:53:34.718 3 SMTP-929371(workemail.com.smtpip.com:25) [1959495450] failed to send. Error Code=connection reset by peer

I am out of options here,  wondering if anyone know's anything about this?

Vladimir


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