Address lookups are not the issue (and in fact, should not even occur in this scenario), because you are presenting Outlook with an SMTP format address -- . Outlook can and will always resolve an SMTP format address without doing a name lookup. THe problem is mainly that Outlook sort of sees two recipients because of the space. This solution seems to work, because the brackets force Outlook to use it as a single address:

]

Whether it works for other mailers is a good question. I didn't try it, since it sounded like you're deailing mainly with Outlook clients.
--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx


"Elesus" wrote in message ...
Yes, when we faced the problem, we tried encoding spaces with %20, but that
did not help.

Now the string looks like following:



I suppose the solution should be in disabling address book lookups.
Any other ideas?


"Sue Mosher [MVP-Outlook]" wrote in message
...
Since it's web-based, have you tried encoding the space with %20, as you
would for a normal http:// URL?

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx


"Elesus" wrote in message
...
Hello All,

A bit of general words about the problem:

We have set up the web-based address book where the emails are shown as
hyperlinks (using mailto: ). The email addresses are the encapsulated x400
addresses, which look like following:



If the address does not contain [spaces] like in the example above, then
there is no problem. However if does contain [spaces] like he

"/G=Name/S=Surname/O=My

then Outlook will never send an email. It responses with "microsoft office
outlook does not recognize" the address. It tries to search it in the
address book or in contacts.

How to force it send a letter without checking its validity? or to neglect
spaces?

Any help/ideas are appreciated!

p.s. We cannot remove spaces from addresses.