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What does "Hostname for message ID's " set?




 

Topic: What does "Hostname for message ID's " set?

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What does "Hostname for message ID's " set? (#380)
Posted: 9/18/2002; 9:22 AM by Clark Venable
Modified: 9/18/2002; 9:22 AM by Clark Venable
Response to: Top of Thread.
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Under Conversation-->Preferences-->General is a field for "Hostname for message ID's ". What does that do? (the help function for it is empty, even though below the field is the phrase Please see the help for this item (click on the question mark). I guess this is a bug report, too.

Clark

Re: What does "Hostname for message ID's " set? (#381)
Posted: 9/18/2002; 9:51 AM by Greg Pierce
Modified: 9/18/2002; 9:51 AM by Greg Pierce
Response to: 380
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On Wed, 18 Sep 2002 10:28:02 -0400, Clark Venable wrote:
>Under Conversation-->Preferences-->General is a field for "Hostname for
>message ID's ".  What does that do? (the help function for it is empty, even
>though below the field is the phrase Please see the help for this item (click on
>the question mark). I guess this is a bug report, too.

Every message generated by Conversant is assigned an internet-wide unique message ID, per some RFC/spec whose number I can't currently remember. This is the message id that appears in the headers of emails send out by Conversant, etc.

Conversant will do this based on the server's hostname by default -- but you can use this pref to override that and have message id's that use different hostname for different conversations.

It's not something you or any of your users should really see any effect from one way or another.

g.

RE: What does "Hostname for message ID's " set? (#382)
Posted: 9/18/2002; 10:48 AM by Seth Dillingham
Modified: 9/18/2002; 10:48 AM by Seth Dillingham
Response to: 381
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On 9/18/02, Greg Pierce said:

>It's not something you or any of your users should really see any
>effect from one way or another.

There actually is a reason for it, in spite of this.

If your server is hosting more than one host name, Conversant has no way of knowing which one to use for which conversation, when assigning these unique message ID's.

You can see the message ID's in the headers of every email sent from Conversant (including this one, if you are subscribed by email).

Here's an example: we have a box called "samson.free-conversant.com". That's the canonical name, but lots of other host names can also be used to refer to this machine, including (for example) truerwords.net.

Using this hostname-for-message-ids feature, I can have the message id's for truerwords look like this:

Conversant-45469@truerwords.net

instead of like this:

Conversant-45469@samson.free-conversant.com

or like this:

Conversant-45469@[192.168.0.17]

Greg's right, this isn't a big deal, but this was actually written in for Compaq (a couple years ago). They didn't want references to our hosting service showing up anywhere in their site or the messages it generates.

Seth

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