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Exchange Message Reject 5.4.7

i have one user from a@abc.com domain trying to send email to b@xyz.com domain.
when user in a@abc.com domain trys to send email to b@xyz.com he gets the following error:

the email system was unable to deliver the message, but did not report a specific reason. Check the address and try again. if it still fails, contact your system administrator.
<4-SQH-IPX01.abc.xxxx.com #5.0.0. smtp: 5.4.7 - Delivery expired (message too old) '{Errno 0} Error' (delivery attempt: 0)>

i managed domain b@xyz.com (receiving end) i am trying to figure out if it's our problem or their problem.

i already did the following tests:
telnet mail.abc.com
helo xyx.com
mail from: b@xyx.com
rcpt to: a@abc.com (at this point i received error - 5.1.0 address rejected)

thanks in advance

j alfredo

ASKER CERTIFIED SOLUTION

Bawer

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jts2020

ASKER

I am the IT for the receiver server and I already added
1. The individual email address of the sender to the allowed senders in the Vipre Email Security globally)
2. I added their mail server ip addresses to my allowed list

I have disable/turn off the Microsoft Intelligent Messaging filter.

Anything else I can check on my end?

Thanks

Bawer

Both the options are OK, just also add the domain xyz.com to the list of allowed domains and then check.

Alan Hardisty

Please check the sending server is RFC compliant, is not blacklisted and has Reverse DNS configured correctly and it's FQDN is correct by reading my article:

https://www.experts-exchange.com/Software/Server_Software/Email_Servers/A_2427-Problems-sending-mail-to-one-or-more-external-domains.html

SOLUTION

Amit

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jts2020

ASKER

i did many tests and the one that stood out was under mxtoolbox.com.
the transaction time came up with: 15.584 - Not Good! on Transaction time.

how could i fix that?
is it my router/firewall (netgear FVS336G) or my SBS2003?

thanks,

Alan Hardisty

That's not one I would be worrying too much about.

With Netgear - make sure you have the latest firmware installed. They often bring out new ones to fix bugs, so check and upgrade if a new version is available.

jts2020

ASKER

after doing many test emails from about 20 domains i managed, i noticed i could not send from 3 domains to my abc.com domain.
some of the errors bounce back were:
#<#4.4.7 SMTP; 403 4.7.0 TLS handshake failed> #SMTP#
Double checked my settings in my SMTP Virtual Server Connector and notice that Secure Communication was on and a certificate was installed.
After deleting/clearing the certificate mail started flowing from all domains i couldn't received mail.
Not sure how that setting magically turn on - but i do shared control with another IT Company some server management duties (but this was my area).

thanks everyone for helping

j alfredo

jts2020

ASKER

found partial solution here and rest of solution found searching online.