I am having the toughest time sending large attachments, everywhere I have checked my file size limit for send/receive is 100mb but yet users are unable to receive files even at the size of 14mb.
I'm using a spam filter (Appriver) and have worked with there support for a very long time, we see the following errors in logs
13:32:40.260 4 SMTP-000036([myserverIP]) rsp: 354 Start mail input; end with <CRLF>.<CRLF>
13:33:41.038 3 SMTP-000033([myserverIP]) write failed. Error Code=connection reset by peer
13:33:41.038 3 SMTP-000033([myserverIP]) [659500] failed to send. Error Code=connection reset by peer
13:33:41.038 4 SMTP([myserverIP]) [659500] batch reenqueued into tail
Windows firewall is disabled on the exchange server, all other emails that are of smaller value come through just fine.
Here is a print out of size limits:
ConnectorType ConnectorName MaxReceiveMessageSize MaxSendMessageSize
------------- ------------- --------------------- ------------------
Send InternetSendConnector - 35 MB (36,700,160 bytes)
Send Appriver-Smarthost - 35 MB (36,700,160 bytes)
Receive Default EXCHSRVR 100 MB (104,857,600 bytes) -
Receive Client Proxy EXCHSRVR 100 MB (104,857,600 bytes) -
Receive Default Frontend EXCHSRVR 100 MB (104,857,600 bytes) -
Receive Outbound Proxy Frontend EXCHSRVR 100 MB (104,857,600 bytes) -
Receive Client Frontend EXCHSRVR 100 MB (104,857,600 bytes) -
Receive ExchangeRelay 100 MB (104,857,600 bytes) -
TransportConfig - 100 MB (104,857,600 bytes) 10 MB (10,485,760 bytes)
ADSiteLink DEFAULTIPSITELINK Unlimited Unlimited
There is a no anti-virus on the server either that could be interfering, I am out of ideas at this point :(
EDIT 1
After running BPA, it gives and error:
Exchange Organization: Check whether the incoming message(CN=MyDomain,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=WG,DC=local) size isn't set
The maximum incoming message size isn't set in organization 'CN=MyDomain,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=WG,DC=local'. This can cause reliability problems.
Here are the sizes as of now:
[PS] C:\Temp>Get-TransportConfig | ft MaxSendSize, MaxReceiveSize
MaxSendSize MaxReceiveSize
----------- --------------
Unlimited Unlimited
[PS] C:\Temp>Get-ReceiveConnector | ft name, MaxMessageSize
Name MaxMessageSize
---- --------------
Default EXCHSRVR 100 MB (104,857,600 bytes)
Client Proxy EXCHSRVR 100 MB (104,857,600 bytes)
Default Frontend EXCHSRVR 100 MB (104,857,600 bytes)
Outbound Proxy Frontend EXCHSRVR 100 MB (104,857,600 bytes)
Client Frontend EXCHSRVR 100 MB (104,857,600 bytes)
ExchangeRelay 100 MB (104,857,600 bytes)
Again, smaller emails come through just fine. Seems like there is a 10mb receive limit somewhere that I cannot find.
