When we switched to Exchange 2000, we found that it was much more
unforgiving of improperly set up MX records, and some mail would not go
through that did prior to the switch or that still worked from other
companies.....My company also operates an ISP so we had control over
some of these and were able to figure out the issue
here is how my DNS guy explained it to me...
>OK - anytime you see this with a domain hosted by us, we
>can fix that immediately. If the domain is not hosted by us
>then the thing to do is have the ISP/Company that hosts the
>domain check the DNS zone files for the mail server MX
>record - usually looks like this:
>
>COMPANY IN MX 10 mail.company.com.
>
>The period at the end of the string is part of the MX record.
>Then find the host name in the file - SHOULD look like:
>
>mail IN A 123.456.789.2
>
>rather than:
>
>mail IN CNAME mailhost.ispcompanyname.net.
When we changed that info thinsg worked again, obviously this is
difficult if you don;t control the DNS and MX record.
May not be your problem, but it was ours in several cases.
W. Andrew Philips
Customer Service Manager
Networks Plus
Phone: (785) 587-4121 x202
(785) 267-6800 x202
Fax: (785) 565-2902
Email: <mailto:[EMAIL PROTECTED]>
-----Original Message-----
From: Patrick Rouse [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, August 21, 2001 1:52 PM
To: MS-Exchange Admin Issues
Subject: Errors sending w/ Exchange 2000
I keep getting errors now and then like this one:
Your mail system could not find a way to successfully communicate with
the
destination system. Please notify your administrator.
<mail.ocasf.org #5.5.0>
I used nslookup on the domain in question and it pulled up the mx recor
correctly. I also telnetted to the mail server on port 25 which made a
successful connection.
the last domain to do this is usaid.gov
We're running Windows 2000 SP2 & Exchange 2000 SP1 both in native mode
with AD Integrated DNS.
Any ideas? Thanks.
List Charter and FAQ at:
http://www.sunbelt-software.com/exchange_list_charter.htm
List Charter and FAQ at:
http://www.sunbelt-software.com/exchange_list_charter.htm
