Exchange 2007 message size problem

[tuglet]

Hi All

I have two Exchange 2007 servers; one in Glasgow and one in Edinburgh. There is a WAN link between them. All internet email comes into the Glasgow site and then gets routed to Edinburgh across the WAN. This has been working fine for years now.

Yesterday I increased the size of email messages we can send/receive from 10MB to 20MB but I'm having a small issue. Messages from the internet of between 10MB and 20MB that are addressed to mailboxes on the Glasgow server arrive fine. However, the same messages addressed to mailboxes on the Edinburgh server do not arrive. I get the following error text in logged:

ROUTING FAIL '550 5.2.3 RESOLVER.RST.SendSizeLimit; message too large for this sender'

I've Googled this error and as far as I can see I've configured everything correctly in Exchange.

I can forward large messages from my mailbox to mailboxes on the Edinburgh server so I know the target mailboxes are capable of receiving large messages. There's obviously something wrong with the routing between the Glasgow and Edinburgh servers but I just cannot see it.

These were clean installs of Exchange 2007 and there are have never been any older Exchange versions in the organisation.

Any pointers would be much appreciated.

Cheers
tuglet

[buggalugs]

What mechanism are you using to transfer the emails from Glasgow to Edinbrough?

One pet hate of mine is the umpteen different places that you can specify message size limits, there's probably another setting lurking somewhere else...

[Allanv]

Have a look here see if you missed something.

http://blog.petrovic.cc/edge/archive/2008/03/17/ex...

[tuglet]

buggalugs said:

What mechanism are you using to transfer the emails from Glasgow to Edinbrough?

One pet hate of mine is the umpteen different places that you can specify message size limits, there's probably another setting lurking somewhere else...

Hi buggalugs. Sorry to sound thick, but I don't understand the question.

[tuglet]

Allanv said:

Have a look here see if you missed something.

http://blog.petrovic.cc/edge/archive/2008/03/17/ex...

Hi Allanv

This bit from your link sounds relevant:

"If the recipient is allowed to receive a large message, but the sender isn't allowed to send a message of that size, you get the following NDR: #550 5.2.3 RESOLVER.RST.SendSizeLimit; message too large for this sender ##"

This is the error I'm getting in my Exchange logs but the sender is external (I'm using a Yahoo! Mail account for testing) so I can't configure the send size limit. This is what's throwing me. I tried creating my Yahoo! Mail account as a Mail Contact in Exchange but it only allows me to set a receive size limit, not a send size limit.

I'd worked through your link already, with the exception of number 6:

Set-ADSiteLink "SITE LINK NAME" -MaxMessageSize 20Mb

I take it I find the SITE LINK NAME in AD Sites and Services, but what text is it exactly? This should be unlimited by default, but I'd like to check it anyway.

[Allanv]

I can send 30meg here so if you PM me the email address I will send a 10meg file to test see what happens.

on a side note has the other exchange server been changed as well? The message receive size I mean.

[tuglet]

Allanv said:

I can send 30meg here so if you PM me the email address I will send a 10meg file to test see what happens.

on a side note has the other exchange server been changed as well? The message receive size I mean.

Hi Allanv

Yep, changed both servers. Thanks for the offer, but I think it's sorted now. Had to restart the Transport service on the Edinburgh server. I should have learned by now to just do a reboot whenever I get a strange problem with Exchange.

Cheers
tuglet