On Sunday 19 May 2002 16:06, Andreas Amann wrote:
On Sat, 18 May 2002, GertJan Spoelman wrote:
Yes, but why is it coming from sourceforge, if someserver.suse.com would do this I would not have asked it.
Maybe it is an attempt to protect sourceforge users from those mails with different envelope- and message From: headers. Hits a lot of spam but also mailing-lists. But that is just a guess. You could try to ask the sourceforge postmasters, but i doubt they will answer.
For now I have put them in my sendmail access file and they get a nice 550 error when they try it again, so far I still can send messages to the list.
Imagine every mailserver is going to do this and there are a 1000 subscribers to a list, then if you sent a message to the list you immediatly get 1000 connections to your mailserver, I don't think thats how it's supposed to work. So either the check is broken or my assumption is wrong.
I agree that this kind of check is probably not very polite. The Exim folks also state the following: "This facility [callout] should be used with care, because it adds a lot of resource usage to the cost of verifying an address." (Exim Spec, ch 37.10).
Fortunately not every host runs exim with those verifying rules activated.
Yes, although I would not mind if a server does this when I actually mail directly to that server, but in this case I don't think it's a valid check. -- GertJan