Yahoo Groups archive

Milter-greylist

Index last updated: 2026-04-28 23:32 UTC

Message

Re: [milter-greylist] How does the message with the 451 error get processed?

2005-11-29 by Matthias Scheler

On Tue, Nov 29, 2005 at 04:33:55PM -0600, Thomas Cameron wrote:
> Is the text after the 451 error code actually interpreted by the sending
> MTA?

No, or at least it shouldn't.

> Or is it just human readable info for the sysadmin reading log
> files on the sending side?

That's the purpose.

> The reason I ask is, I've seen Exchange servers with the default 15
> minute retry configured re-send within just a few minutes (i.e. less
> than 5) when I set "greylist 1m" in my greylist.conf.

I don't know how the retry scheme in Exchange works. But sendmail in
its default configuration tries to deliver e-mails in its queue at
fixed intervals. If an e-mail was greylisted one minute before the
next global queue run the delivery will therefore be attempted
again after only one minute. If Exchange's queue handling works
somewhat like that it might result in fast delivery retries.

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.