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Search took 0.01 seconds. Search: Posts Made By: Scott Kitterman
Forum: The Technical Zone... 20 Jun 2008, 02:25 AM
Replies: 3
Views: 679
Posted By Scott Kitterman
You can't have both an a record and a cname for...

You can't have both an a record and a cname for the same domain name at the same time. Switch it.
Forum: Email Comments, Questions and Miscellaneous 18 Jun 2008, 12:41 PM
Replies: 1
Views: 654
Posted By Scott Kitterman
Sender ID will use SPF records. Most of the time...

Sender ID will use SPF records. Most of the time this is OK, but there are some cases where it's a problem.

Personally, I think publishing SPF records is a good idea, but not everyone agrees.
Forum: The Technical Zone... 8 Feb 2008, 01:41 AM
Replies: 7
Views: 14,050
Posted By Scott Kitterman
It does not, however, give you increased...

It does not, however, give you increased reliability. If the primary MX is down, properly designed mail servers will try lower priority MX records, so more at the same priority doesn't help.
Forum: Email Comments, Questions and Miscellaneous 7 Jan 2008, 06:15 AM
Replies: 6
Views: 1,017
Posted By Scott Kitterman
Actually you are reporting both to Spamcop and...

Actually you are reporting both to Spamcop and whoever they relay the message to. Spamcop maintains a block list based on these reports. IIRC, the default for new account creation now is to only...
Forum: Setting up/running an email service 12 Dec 2007, 01:39 AM
Replies: 22
Views: 4,384
Posted By Scott Kitterman
How do you verify MAIL FROM using DKIM? DKIM has...

How do you verify MAIL FROM using DKIM? DKIM has nothing to say about the envelope.
Forum: Email Comments, Questions and Miscellaneous 9 Dec 2007, 04:22 AM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
I owe you an apology. I got mixed up about who...

I owe you an apology. I got mixed up about who left which comments in the thread. I'm sorry and I retract the statements above. They are in error.

If the spammers actually got the C/R challenges...
Forum: Email Comments, Questions and Miscellaneous 8 Dec 2007, 11:44 AM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
Personally, I think the unfounded and misleading...

Personally, I think the unfounded and misleading statements are yours. If I keep at this it's because it seems so clear and obvious to me. So far, you accuse me of having a profit motive, being an...
Forum: Email Comments, Questions and Miscellaneous 7 Dec 2007, 02:28 AM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
Thanks for the unfounded accusation. I'm opposed...

Thanks for the unfounded accusation.

I'm opposed to C/R because it's a form of backscatter that hits innocent third parties. I'm opposed to all such backscatter. I think it interferes with the...
Forum: Email Comments, Questions and Miscellaneous 5 Dec 2007, 02:04 PM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
Since a few months after I deployed SPF, I've...

Since a few months after I deployed SPF, I've gotten little backscatter. Every now and then one of my domains gets used in a spam run, but it's not common.

As far as backscatter sources go, I don't...
Forum: Email Comments, Questions and Miscellaneous 3 Dec 2007, 11:31 PM
Replies: 23
Views: 1,910
Posted By Scott Kitterman
This issue was anticipated when SPF was being...

This issue was anticipated when SPF was being developed. It's in the SPF RFC security considerations:

http://www.openspf.org/RFC_4408#cross-user-forgery

In theory this is a risk, but it doesn't...
Forum: Email Comments, Questions and Miscellaneous 3 Dec 2007, 11:23 PM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
I guess that's the fundamental point of...

I guess that's the fundamental point of disagreement then.

If the backscatter effects were unknown, then I'd agree, but they are well known. BTW, spamcop considers many types of backscatter to be...
Forum: Email Comments, Questions and Miscellaneous 2 Dec 2007, 04:16 AM
Replies: 23
Views: 1,910
Posted By Scott Kitterman
Right, but that's the domain owners...

Right, but that's the domain owners responsibility to prevent that type of abuse. It's directly addressed in the security section of the SPF RFC. See...
Forum: Email Comments, Questions and Miscellaneous 2 Dec 2007, 04:13 AM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
I'm not disputing that C/R reduces unwanted...

I'm not disputing that C/R reduces unwanted messages for the C/R users, so I'm not arguing with that claim at all. What I'm arguing is the side effects of doing so.

If you accept that most spam...
Forum: Email Comments, Questions and Miscellaneous 30 Nov 2007, 03:13 AM
Replies: 23
Views: 1,910
Posted By Scott Kitterman
What chance is that?

What chance is that?
Forum: Email Comments, Questions and Miscellaneous 30 Nov 2007, 03:11 AM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
OK. If most (actually virtually all) e-mail...

OK. If most (actually virtually all) e-mail addresses in spam are forged then virtually all replies replies go to innocent third parties (to the extent they go to anyone). What's mysterious about...
Forum: Email Comments, Questions and Miscellaneous 29 Nov 2007, 06:52 AM
Replies: 23
Views: 1,910
Posted By Scott Kitterman
This was discussed (and suggested) in the other...

This was discussed (and suggested) in the other thread as a resonable alternative to inconveniencing random third parties on the internet to keep your inbox clean and rejected.

Another alternative...
Forum: Email Comments, Questions and Miscellaneous 29 Nov 2007, 06:48 AM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
So are you saying that you think that it's not...

So are you saying that you think that it's not established (and needs proving) that most spam is from a forged address?
Forum: Email Comments, Questions and Miscellaneous 27 Nov 2007, 10:31 PM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
It's well known that virutally all spam uses...

It's well known that virutally all spam uses forged e-mail addresses. The rest follows from that. It's not that hard.
Forum: Email Comments, Questions and Miscellaneous 26 Nov 2007, 11:28 PM
Replies: 192
Views: 22,010
Posted By Scott Kitterman
I really don't think the amount matters. Sending...

I really don't think the amount matters. Sending me unsolicited mail so that you don't get any is just not right. No matter how you dress it up, that's what's going on. It does nothing to reduce...
Forum: Email Help Needed! 25 Nov 2007, 02:58 AM
Replies: 4
Views: 941
Posted By Scott Kitterman
If you do decide you are interested in it, see...

If you do decide you are interested in it, see http://openspf.org/ for more information.
Forum: The Technical Zone... 3 Nov 2007, 11:19 PM
Replies: 4
Views: 676
Posted By Scott Kitterman
Does the expander rewrite To: anyway? They often...

Does the expander rewrite To: anyway? They often do.
Forum: The Technical Zone... 2 Nov 2007, 10:52 PM
Replies: 4
Views: 676
Posted By Scott Kitterman
The best thing to do is to create one message per...

The best thing to do is to create one message per recipient with a normal To. That way it will appear to be to them and not show other addresses.
Forum: The Technical Zone... 24 Oct 2007, 02:56 AM
Replies: 3
Views: 824
Posted By Scott Kitterman
No. Sorry. I'd look at the courier project's...

No. Sorry. I'd look at the courier project's home page and see what they have to offer.
Forum: The Technical Zone... 22 Oct 2007, 11:27 PM
Replies: 3
Views: 824
Posted By Scott Kitterman
I'd ask on a courier specific mail list.

I'd ask on a courier specific mail list.
Forum: Email Help Needed! 13 Oct 2007, 03:36 AM
Replies: 17
Views: 3,468
Posted By Scott Kitterman
The trick is figuring out if it's your ISP mail...

The trick is figuring out if it's your ISP mail server or the one on the distant end that is generating the message.
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