[jcasti1226]

Hi all,

On the last 15 day I have encountered problems receiving emails from the internet. I have updated to Exchange 2010 SP1 over a month ago and install SP1 Rollup 1 and 2. I have not touch the server configuration and it just stopped working. I’m able to test the server for connectivity using mxtoolbox I'm also able to send emails outside of my organization and send and receive internally.


Here is my receive connector config:

RunspaceId : 0bdac9a2-d68c-4bfd-ad3b-e05a7a49dcfc
AuthMechanism : Tls
Banner :
BinaryMimeEnabled : True
Bindings : {0.0.0.0:25}
ChunkingEnabled : True
DefaultDomain :
DeliveryStatusNotificationEnabled : True
EightBitMimeEnabled : True
BareLinefeedRejectionEnabled : False
DomainSecureEnabled : False
EnhancedStatusCodesEnabled : True
LongAddressesEnabled : False
OrarEnabled : False
SuppressXAnonymousTls : False
AdvertiseClientSettings : False
Fqdn : mail.lapuja.com
Comment :
Enabled : True
ConnectionTimeout : 00:10:00
ConnectionInactivityTimeout : 00:05:00
MessageRateLimit : unlimited
MessageRateSource : IPAddress
MaxInboundConnection : 5000
MaxInboundConnectionPerSource : 20
MaxInboundConnectionPercentagePerSource : 2
MaxHeaderSize : 64 KB (65,536 bytes)
MaxHopCount : 60
MaxLocalHopCount : 12
MaxLogonFailures : 3
MaxMessageSize : 10 MB (10,485,760 bytes)
MaxProtocolErrors : 5
MaxRecipientsPerMessage : 200
PermissionGroups : AnonymousUsers
PipeliningEnabled : True
ProtocolLoggingLevel : None
RemoteIPRanges : {0.0.0.0-255.255.255.255}
RequireEHLODomain : False
RequireTLS : False
EnableAuthGSSAPI : False
ExtendedProtectionPolicy : None
LiveCredentialEnabled : False
TlsDomainCapabilities : {}
Server : PULPO
SizeEnabled : Enabled
TarpitInterval : 00:00:05
MaxAcknowledgementDelay : 00:00:30
AdminDisplayName :
ExchangeVersion : 0.1 (8.0.535.0)
Name : internet
DistinguishedName : CN=internet,CN=SMTP Receive Connectors,CN=Protocols,CN=PULPO,CN=Servers,CN=Ex
change Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=Lap
uja,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=lapuja,DC =com
Identity : PULPO\internet
Guid : bf554f18-0bb5-4be6-a5f9-814ac8bdc079
ObjectCategory : lapuja.com/Configuration/Schema/ms-Exch-Smtp-Receive-Connector
ObjectClass : {top, msExchSmtpReceiveConnector}
WhenChanged : 3/21/2011 5:29:25 PM
WhenCreated : 3/20/2011 12:31:20 PM
WhenChangedUTC : 3/21/2011 9:29:25 PM
WhenCreatedUTC : 3/20/2011 4:31:20 PM
OrganizationId :
OriginatingServer : prodigio2.lapuja.com
IsValid : True

Here is also my transport from one last entery on :
SMTPSubmit SMTPAcceptAnySender SMTPAcceptAuthoritativeDomainSender AcceptRoutingHeaders,Set Session Permissions
"220 mail.lapuja.com Microsoft ESMTP MAIL Service ready at Sun, 20 Mar 2011 13:30:13 -0400",
EHLO blu0-omc1-s21.blu0.hotmail.com,
250-mail.lapuja.com Hello [65.55.116.32],
250-SIZE 10485760,
250-PIPELINING,
250-DSN,
250-ENHANCEDSTATUSCODES,
250-AUTH,
250-8BITMIME,
250-BINARYMIME,
250 CHUNKING,
MAIL FROM:<jcasti1226@hotmail.com> SIZE=2572,
Tarpit for '0.00:00:05',
421 4.3.2 Service not available,
QUIT,
221 2.0.0 Service closing transmission channel,
Local

Here is my telnet message when i try sending an email by command:
220 mail.lapuja.com Microsoft ESMTP MAIL Service ready at Sun, 20 Mar 2011 14:46
:13 -0400
helo lapuja.com
250 mail.lapuja.com Hello [192.168.2.100]
mail from: jcasti1226@hotmail.com
421 4.3.2 Service not available


Regards,
Juan

[tehcamel]

4.2.1 432 is one of two things.
either you've hit a backpressure issue, of your receive connector is not correctly configured.