Exchange 2010 to 2003 mail flow failing

phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
in Off-Topic
Scenario: Just installed exchange 10 to coexist with an existing exchange 03 organization with two 03 servers

Problem: Mail flow fails from 10 to 03 but for just one of the 03 servers (slave). Mail flow works from 10 to 03 (master) just fine.

Variables:
Single forest, single domain
Exchange 2003 master – Ex03A (AD site A)
Exchange 2003 slave – Ex03B (AD site B)
Exchange 2010 – Ex10Z (AD site A)

Current mail flow:
Ex03A <-> Ex03B
Ex03A <-> Ex10Z
Ex03B -> Ex10Z
Ex10Z -fails> Ex03B

Output from get-routinggroupconnector | fl ran from Ex10Z

RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
TargetRoutingGroup : First Routing Group
Cost : 1
TargetTransportServers : {Ex03A}
ExchangeLegacyDN : /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuratio
n/cn=Connections/cn=Ex10Z-Ex03A
PublicFolderReferralsEnabled : True
SourceRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
SourceTransportServers : {Ex10Z}
HomeMTA : Microsoft MTA
HomeMtaServerId : Ex10Z
MaxMessageSize : unlimited
AdminDisplayName :
ExchangeVersion : 0.1 (8.0.535.0)
Name : Ex10Z-Ex03A
DistinguishedName : CN=Ex10Z-Ex03A,CN=Connections,CN=Exchange Routing Group (DWBGZMFD01QNBJR),CN=Routin
g Groups,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=
First Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=company,DC=c
om
Identity : Ex10Z-Ex03A
Guid : ae599ccb-bdfb-4765-b846-a9066ad8dcfb
ObjectCategory : company.com/Configuration/Schema/ms-Exch-Routing-Group-Connector
ObjectClass : {top, msExchConnector, msExchRoutingGroupConnector}
WhenChanged : 2/7/2015 7:40:30 AM
WhenCreated : 2/7/2015 7:40:30 AM
WhenChangedUTC : 2/7/2015 3:40:30 PM
WhenCreatedUTC : 2/7/2015 3:40:30 PM
OrganizationId :
OriginatingServer : DC.company.com
IsValid : True

RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
TargetRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
Cost : 1
TargetTransportServers : {Ex10Z}
ExchangeLegacyDN : /o=First Organization/ou=First Administrative Group/cn=Configuration/cn=Connections/cn=G
JL2-Ex10Z
PublicFolderReferralsEnabled : True
SourceRoutingGroup : First Routing Group
SourceTransportServers : {Ex03A}
HomeMTA : Microsoft MTA
HomeMtaServerId : Ex03A
MaxMessageSize : unlimited
AdminDisplayName :
ExchangeVersion : 0.1 (8.0.535.0)
Name : Ex03A-Ex10Z
DistinguishedName : CN=Ex03A-Ex10Z,CN=Connections,CN=First Routing Group,CN=Routing Groups,CN=First Adm
inistrative Group,CN=Administrative Groups,CN=First Organization,CN=Microsoft Exchange,C
N=Services,CN=Configuration,DC=company,DC=com
Identity : Ex03A-Ex10Z
Guid : 382fae0f-beed-4003-adaf-237a2dddd91b
ObjectCategory : company.com/Configuration/Schema/ms-Exch-Routing-Group-Connector
ObjectClass : {top, msExchConnector, msExchRoutingGroupConnector}
WhenChanged : 2/7/2015 7:40:30 AM
WhenCreated : 2/7/2015 7:40:30 AM
WhenChangedUTC : 2/7/2015 3:40:30 PM
WhenCreatedUTC : 2/7/2015 3:40:30 PM
OrganizationId :
OriginatingServer : DC.company.com
IsValid : True

Output from get-message | fl on Ex10Z where the queue is filling up:

RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
Subject : Test
InternetMessageId : <1D2C2D8EE4345940A8D1F69B19E060E38A8B@ex10Z.company.com>
FromAddress : ex10user@company.com
Status : Ready
Size : 5.982 KB (6,126 bytes)
MessageSourceName : FromLocal
SourceIP : 255.255.255.255
SCL : -1
DateReceived : 2/7/2015 3:57:10 PM
ExpirationTime : 2/9/2015 3:57:10 PM
LastError : There is currently no route to the mailbox database.
RetryCount : 0
Recipients :
ComponentLatency :
MessageLatency : 15:52:27.3487757
DeferReason : None
Priority : Normal
MessageIdentity : ex10Z\Unreachable\103
Queue : ex10Z\Unreachable
Identity : ex10Z\Unreachable\103
IsValid : True

Proposed solution:
In order to fix mail flow from Ex10Z -> Ex03B, run the following command in Ex10Z EMS

New-RoutingGroupConnector -Name "Ex10Z-Ex03B" -SourceTransportServers "Ex10Z.company.com" -TargetTransportServers "Ex03B.company.com" -Cost 100 -Bidirectional $true

Restart transport service on Ex10Z, restart smtp service on Ex03A and Ex03B

Will this proposed solution work or should I be looking elsewhere?
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Comments

  • joelsfoodjoelsfood Member Posts: 1,027 ■■■■■■□□□□
    Honestly, I did not read thorugh all of the current settings.

    That being said, yes, that's where I would start. Any time I've had 2010 and 2003 coexistings, and there's been flow problems, it's been the routing groups.

    Just make SURE you remove the routing group when you retire the 2003 servers, or you'll have issues with mailflow to the 2010 box, even when it's the only server.
    http://www.joelsccie.com
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  • phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
    joelsfood wrote: »
    Honestly, I did not read thorugh all of the current settings.

    That being said, yes, that's where I would start. Any time I've had 2010 and 2003 coexistings, and there's been flow problems, it's been the routing groups.

    Just make SURE you remove the routing group when you retire the 2003 servers, or you'll have issues with mailflow to the 2010 box, even when it's the only server.

    Tried and didnt work. Queue on Ex10Z is still unable to send to Ex03B but Ex03B is able to send to Ex10Z.
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  • joelsfoodjoelsfood Member Posts: 1,027 ■■■■■■□□□□
    What does EX03B show for routing? I do'nt see it mentioned in either of those routing group connectors
    http://www.joelsccie.com
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  • phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
    joelsfood wrote: »
    What does EX03B show for routing? I do'nt see it mentioned in either of those routing group connectors

    Here is the new get-routinggroupconnector | fl. Interesting that it created two Ex10Z-Ex03B identities despite me issuing the Bidirectional flag. Shouldnt there be one for Ex03B-Ex10Z?





    RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
    TargetRoutingGroup : First Routing Group
    Cost : 1
    TargetTransportServers : {Ex03A}
    ExchangeLegacyDN : /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuratio
    n/cn=Connections/cn=Ex10Z-Ex03A
    PublicFolderReferralsEnabled : True
    SourceRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
    SourceTransportServers : {Ex10Z}
    HomeMTA : Microsoft MTA
    HomeMtaServerId : Ex10Z
    MaxMessageSize : unlimited
    AdminDisplayName :
    ExchangeVersion : 0.1 (8.0.535.0)
    Name : Ex10Z-Ex03A
    DistinguishedName : CN=Ex10Z-Ex03A,CN=Connections,CN=Exchange Routing Group (DWBGZMFD01QNBJR),CN=Routin
    g Groups,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=
    First Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=company,DC=c
    om
    Identity : Ex10Z-Ex03A
    Guid : ae599ccb-bdfb-4765-b846-a9066ad8dcfb
    ObjectCategory : company.com/Configuration/Schema/ms-Exch-Routing-Group-Connector
    ObjectClass : {top, msExchConnector, msExchRoutingGroupConnector}
    WhenChanged : 2/7/2015 7:40:30 AM
    WhenCreated : 2/7/2015 7:40:30 AM
    WhenChangedUTC : 2/7/2015 3:40:30 PM
    WhenCreatedUTC : 2/7/2015 3:40:30 PM
    OrganizationId :
    OriginatingServer : DC.company.com
    IsValid : True


    RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
    TargetRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
    Cost : 1
    TargetTransportServers : {Ex10Z}
    ExchangeLegacyDN : /o=First Organization/ou=First Administrative Group/cn=Configuration/cn=Connections/cn=G
    JL2-Ex10Z
    PublicFolderReferralsEnabled : True
    SourceRoutingGroup : First Routing Group
    SourceTransportServers : {Ex03A}
    HomeMTA : Microsoft MTA
    HomeMtaServerId : Ex03A
    MaxMessageSize : unlimited
    AdminDisplayName :
    ExchangeVersion : 0.1 (8.0.535.0)
    Name : Ex03A-Ex10Z
    DistinguishedName : CN=Ex03A-Ex10Z,CN=Connections,CN=First Routing Group,CN=Routing Groups,CN=First Adm
    inistrative Group,CN=Administrative Groups,CN=First Organization,CN=Microsoft Exchange,C
    N=Services,CN=Configuration,DC=company,DC=com
    Identity : Ex03A-Ex10Z
    Guid : 382fae0f-beed-4003-adaf-237a2dddd91b
    ObjectCategory : company.com/Configuration/Schema/ms-Exch-Routing-Group-Connector
    ObjectClass : {top, msExchConnector, msExchRoutingGroupConnector}
    WhenChanged : 2/7/2015 7:40:30 AM
    WhenCreated : 2/7/2015 7:40:30 AM
    WhenChangedUTC : 2/7/2015 3:40:30 PM
    WhenCreatedUTC : 2/7/2015 3:40:30 PM
    OrganizationId :
    OriginatingServer : DC.company.com
    IsValid : True


    RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
    TargetRoutingGroup : First Routing Group
    Cost : 100
    TargetTransportServers : {Ex03B}
    ExchangeLegacyDN : /o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuratio
    n/cn=Connections/cn=Ex10Z-Ex03B
    PublicFolderReferralsEnabled : True
    SourceRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
    SourceTransportServers : {Ex10Z}
    HomeMTA : Microsoft MTA
    HomeMtaServerId : Ex10Z
    MaxMessageSize : unlimited
    AdminDisplayName :
    ExchangeVersion : 0.1 (8.0.535.0)
    Name : Ex10Z-Ex03B
    DistinguishedName : CN=Ex10Z-Ex03B,CN=Connections,CN=Exchange Routing Group (DWBGZMFD01QNBJR),CN=Rout
    ing Groups,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,C
    N=First Organization,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=company,DC
    =com
    Identity : Ex10Z-Ex03B
    Guid : 37a9f53c-2166-440c-b54b-23b165323ae3
    ObjectCategory : company.com/Configuration/Schema/ms-Exch-Routing-Group-Connector
    ObjectClass : {top, msExchConnector, msExchRoutingGroupConnector}
    WhenChanged : 2/8/2015 8:09:08 AM
    WhenCreated : 2/8/2015 8:09:08 AM
    WhenChangedUTC : 2/8/2015 4:09:08 PM
    WhenCreatedUTC : 2/8/2015 4:09:08 PM
    OrganizationId :
    OriginatingServer : DC.company.com
    IsValid : True


    RunspaceId : 4d5dc855-1b62-4d39-9aa7-fb027f25edda
    TargetRoutingGroup : Exchange Routing Group (DWBGZMFD01QNBJR)
    Cost : 100
    TargetTransportServers : {Ex10Z}
    ExchangeLegacyDN : /o=First Organization/ou=First Administrative Group/cn=Configuration/cn=Connections/cn=G
    JLSRVLVMX1-Ex03B
    PublicFolderReferralsEnabled : True
    SourceRoutingGroup : First Routing Group
    SourceTransportServers : {Ex03B}
    HomeMTA : Microsoft MTA
    HomeMtaServerId : Ex03B
    MaxMessageSize : unlimited
    AdminDisplayName :
    ExchangeVersion : 0.1 (8.0.535.0)
    Name : Ex10Z-Ex03B
    DistinguishedName : CN=Ex10Z-Ex03B,CN=Connections,CN=First Routing Group,CN=Routing Groups,CN=First A
    dministrative Group,CN=Administrative Groups,CN=First Organization,CN=Microsoft Exchange
    ,CN=Services,CN=Configuration,DC=company,DC=com
    Identity : Ex10Z-Ex03B
    Guid : c8cd8eea-4ad6-47b4-bef5-9fb93288bca3
    ObjectCategory : company.com/Configuration/Schema/ms-Exch-Routing-Group-Connector
    ObjectClass : {top, msExchConnector, msExchRoutingGroupConnector}
    WhenChanged : 2/8/2015 8:09:08 AM
    WhenCreated : 2/8/2015 8:09:08 AM
    WhenChangedUTC : 2/8/2015 4:09:08 PM
    WhenCreatedUTC : 2/8/2015 4:09:08 PM
    OrganizationId :
    OriginatingServer : DC.company.com
    IsValid : True
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  • joelsfoodjoelsfood Member Posts: 1,027 ■■■■■■□□□□
    Those look right, one each way, from each pair of routing groups. I would try adjusting the cost to 1
    http://www.joelsccie.com
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  • lsud00dlsud00d Member Posts: 1,571
    Have you looked at layer 3? What are the logs saying?

    To that extent, what does a route print show?

    It sounds like it might be site/schema related. This link has more info on it

    http://www.cosonok.com/2013/01/a-fistful-of-exchange-2010-errors-and.html
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  • phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
    Layer 3 is fine, Ex10Z can telnet:25 to Ex03B.

    Thanks for the link, I think it's the permission inheritance issue.
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  • phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
    Fixed.

    In adsiedit, enabled inherit permissions on Ex03B here:

    CN=Services, CN=Microsoft Exchange, CN=First Organization, CN=Administrative Groups, CN=First Administrative Group, CN=Servers, CN=Ex03B
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  • phoeneousphoeneous Member Posts: 2,333 ■■■■■■■□□□
    I also ran into the problem of not being able to add email to my phone through activesync. After checking error logs, I found the culprit:

    Exception type: Microsoft.Exchange.Data.Directory.ADOperationException
    Exception message: Active Directory operation failed on dc.company.com. This error is not retriable. Additional information: Access is denied.
    Active directory response: 00000005: SecErr: DSID-03151E07, problem 4003 (INSUFF_ACCESS_RIGHTS), data 0

    Turns out because I'm domain/enterprise admin, inherited permissions are disabled for security reasons which makes total sense.


    Followed the steps here and problem fixed:

    iPhones don't sync with Exchange 2010 - connection to the server failed
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  • joelsfoodjoelsfood Member Posts: 1,027 ■■■■■■□□□□
    Thanks for the update phoeneous, I've filed this one away in my notes. I might hope not to see exchange 2003 again, but I'm sure I will. :)
    http://www.joelsccie.com
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  • lsud00dlsud00d Member Posts: 1,571
    Woohoo! Good job!
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