Hey Guys,
I ran into a problem while testing a greylisting patch from Bill
Shupp's site. Many of the new antispam appliances and certain
firewalals are used as a smart host, so it looks as follows:
Exchange -> antispam appliance -> QmailToaster
Many of the antispam appliances are having issues with temporary 4xx
errors, they will not retry later as per the standard. I've run into
this a few times, and it's always tough to diagnose. Just thought I'd
put out a notice that if you use greylisting, you may lose valid mail
because of this.
Buyer Beware....
Erik
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