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incoming email delivery problems SBS2003

SBS 2003
Having issues with some incoming emails
getting timeouts on SMTP Log
95% of email get delivered OK  but have issues with some email addresses
here is example of SMTP log
getting lots of timeouts


2010-08-17 00:02:15 192.168.1.1 #########  SMTPSVC1 SERVERNAME 192.168.1.2 0 MAIL - +FROM:<#####@yahoo.com> 250 0 42 41 0 SMTP - - - -
2010-08-17 00:02:15 192.168.1.1 ############ SMTPSVC1 SERVERNAME 192.168.1.2 0 RCPT - +TO:<accounts@domain.co.nz > 250 0 41 38 0 SMTP - - - -
2010-08-17 00:02:20 192.168.1.1 ######## SMTPSVC1 SERVERNAME 192.168.1.2 0 TIMEOUT - ######## 121 16885952 84 4 97875 SMTP - - - -
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Greg Barber
Asked:
Greg Barber
1 Solution
 
sunnyc7Commented:
www.mxtoolbox.com
enter your domain name

do a SMTP Diagnostics and blacklist check

Go here
www.testexchangeconnectivity.com/
Do an inbound and outbound SMTP test

Please post back results here.

thanks
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Greg BarberAuthor Commented:
additional note mail is routed through microsoft online hosted forefront protection

passes testexchangeconnectivity.com

get this from mxtoolbox.com
Not an open relay.
 0 seconds - Good on Connection time
 6.146 seconds - Warning on Transaction time
 OK - 203.97.49.40 resolves to SERVER
 OK - Reverse DNS matches SMTP Banner

Blackilist check all green but get this on bottom of list
BARRACUDA  TIMEOUT   0
CSMA  TIMEOUT ERROR, Reponse code=2   0
CYBERLOGIC  TIMEOUT ERROR, Reponse code=2   0
RANGERSBL  TIMEOUT ERROR, Reponse code=2   0
RRBL  TIMEOUT ERROR, Reponse code=2   0
SOLID  TIMEOUT ERROR, Reponse code=2   0
SPAMRBL  TIMEOUT ERROR, Reponse code=2  

Not an open relay.
 0 seconds - Good on Connection time
 6.146 seconds - Warning on Transaction time
 OK - 203.97.49.40 resolves to officeserver.officecoffee.net.nz
 OK - Reverse DNS matches SMTP Banner


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B HCommented:
the delay on transaction time could be caused by a few different issues:
- antispam software?  antivirus software?  hardware firewall that does spam filtering?
and more commonly, really slow internet access.

if you have a slow internet connection, and some certain external senders do too, that would do it right there.

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Greg BarberAuthor Commented:
Hi,
Internet is not slow and  some of the emails that are being bounced back are coming from are from an ISP so I dont thinks its internet speed related,
antispam is handled my microsoft online forfront protection (external from the server)
this filters spam  mail and relays good mail to the server.
none of the hardware connected to the server does spam or virus protection
have checked the virus logs and could not see any virus activity there
still not sure where to go from here?
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Greg BarberAuthor Commented:
changed the router and that fixed the problem
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Glen KnightCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program. See my comment at the end of the question for more details.
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