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SMTP communication error 550 and 503 from Exchange 2003
I'm a computer consultant and one of my clients is getting a few email bounce back messages when dealing with a particular business associate. We are using 2003 SBS . We are also using Ninja. I have checked the spam services, and the ISP for blacklist issues. The two different bounce backs may be unrelated. I will post both bounce backs here. The names are changed to protect the innocent.
'username@egsllp.com' on 2/2/2007 9:58 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mydomainname.com #5.5.0 smtp;503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.>
Now remember this is the actual bounce back message that the user, my client, is getting in his Outlook. What does it mean.
The other bounce back is:
username@verizon.net on 2/2/2007 8:58 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mydomainname.com #5.5.0 smtp;550 You are not allowed to send mail:sv16pub.verizon.net>
I've spent hours on the phone with verizon. This is an inconsistant error. I can send email to this user from the administrator account. She can reply to the administrator acount. I can send an email to different user on the verizon.net network, he cannot reply.
'username@egsllp.com' on 2/2/2007 9:58 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mydomainname.com #5.5.0 smtp;503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.>
Now remember this is the actual bounce back message that the user, my client, is getting in his Outlook. What does it mean.
The other bounce back is:
username@verizon.net on 2/2/2007 8:58 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mydomainname.com #5.5.0 smtp;550 You are not allowed to send mail:sv16pub.verizon.net>
I've spent hours on the phone with verizon. This is an inconsistant error. I can send email to this user from the administrator account. She can reply to the administrator acount. I can send an email to different user on the verizon.net network, he cannot reply.
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ASKER
I have reverse dns configured and www.dnsstuff.com shows it working correctly.
And this to TechSoEasy, What in the first message makes you think that Ninja may be misconfigured? I will try disabling the Ninja filter to test the response.
As for using the Exchange Intelligent Message Filter instead of Ninja, I will have to look into it. Are you talking about the junk filter when the clients are using caching?
Thanks for the replies so far guys
And this to TechSoEasy, What in the first message makes you think that Ninja may be misconfigured? I will try disabling the Ninja filter to test the response.
As for using the Exchange Intelligent Message Filter instead of Ninja, I will have to look into it. Are you talking about the junk filter when the clients are using caching?
Thanks for the replies so far guys
ASKER
i am looking into the Exchange Message Filter and have just configured it on my own exchange 2003 server to use it. Got rid of Ninja on my server. Will see how it works out. If it's as good as you say i will start using it on my clients.
Boy sure is amazing how one gets caught up in hype to not know that this is a basically free option....
Again thanks all for your input.
Boy sure is amazing how one gets caught up in hype to not know that this is a basically free option....
Again thanks all for your input.
Well, IMF is really a good product, and as you now know, it's not the same as the Outlook Junk Email filter.
It sounds though, like you installed IMF separately, instead of upgrading your Exchange Server to SP2, which would include IMF automatically. To upgrade to SP2, you need to uninstall IMF v1, so it's just better to get that out of the way and go to SP2 if you can.
Jeff
TechSoEasy
It sounds though, like you installed IMF separately, instead of upgrading your Exchange Server to SP2, which would include IMF automatically. To upgrade to SP2, you need to uninstall IMF v1, so it's just better to get that out of the way and go to SP2 if you can.
Jeff
TechSoEasy
Jeff
TechSoEasy