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huntexFlag for Canada

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Postmaster #550 5.1.4 RESOLVER.ADR.Ambiguous; ambiguous address ##

When I send an email to postmaster@mydomain.com it comes back with error:
#550 5.1.4 RESOLVER.ADR.Ambiguous; ambiguous address ##

I've narrowed it down to the Exchange update rollup 7 that breaks delivery status notifications:

I followed this post at the time:

http://replay.web.archive.org/20090408084222/http://www.telnetport25.com/component/content/article/1-exchange-2007-gen/280-exchange-2007-sp-1-roll-up-7-delivery-status-notifications.html
Never realised before but I can't send to postmaster@mydomain.com

Here's what I get when I do  (Get-OrganizationConfig).MicrosoftExchangeRecipientEmailAddresses =


SmtpAddress        : postmaster@mydomain.com
AddressString      : postmaster@mydomain.com
ProxyAddressString : smtp:postmaster@mydomain.com
Prefix             : SMTP
IsPrimaryAddress   : False
PrefixString       : smtp

SmtpAddress        : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.com
AddressString      : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.com
ProxyAddressString : SMTP:MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.com
Prefix             : SMTP
IsPrimaryAddress   : True

PrefixString       : SMTP
SmtpAddress        : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.local
AddressString      : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.local
ProxyAddressString : smtp:MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.local
Prefix             : SMTP
IsPrimaryAddress   : False
PrefixString       : smtp


I'm thinking that removing the postmaster entry should fix the 5.1.4 error but I don't know how to remove it from here using PS....
Am I right in thinking this?

Thanks for your help!!!
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Chris Dent
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ASKER

Genuis.
Could you explain it to me?

Thanks very very much.
Sure.

The first part you gave me, it returns an Array (a collection of addresses). That's numbered starting from 0, so we have this:

0: postmaster@mydomain.com
1: MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.com
2: MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@mydomain.local

You wanted to drop the first, 0, so we've taken everything else, from 1 to 2 ([1..2]) and put that into a variable called $Addresses.

Finally, we've taken our modified list, and chucked it into Set-OrganizationConfig.

HTH

Chris
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ASKER

Excellent man, cheers!