spam handling rules with +detail email addresses?

Ken Anderson ka at PACIFIC.NET
Wed Feb 18 16:52:48 GMT 2004

Julian Field wrote:
> At 01:04 18/02/2004, you wrote:
>> How does MailScanner/SA handle incoming email addressed to
>> user+detail at in rules?
>> Sendmail will strip everything after/including the + sign, and deliver
>> to the 'user', but rules in MailScanner for both user+detail at
>> AND user at seem to be bypassed when using this syntax in an
>> email.
>> I've only tested with rules/spam.actions.rules like this:
>> To:     user+detail at    store notify
>> To:     user at store notify
>> Both are bypassed and mail gets the default action applied to it if it's
>> addressed to user+detail at
> But what is the envelope recipient address in this case? user or
> user+detail?

user+detail at is the envelope recipient reported in the
sendmail log. The entry below doesn't seem to work. The message gets the
default rule applied instead of the 'store notify' rule.
To:     user+detail at    store notify

I tried both the suggestions below, and they do properly apply the
action "store notify", but for some reason, sendmail then tries to
deliver the message back to instead of the mail hub!
This creates a problem with the same message being scanned, then
redelivered to the incoming sendmail and looping. Other 'store notify'
rules that are defined for normal email addresses work fine.

We forward mail from the MailScanner box to the mailhub using the
virtusertable feature. No other rule or config issue has broken this
before, so I'm not sure what's happening. I'll turn up logging in
sendmail and see if it will tell me what it's doing with this mail.

Any ideas what is going on?

Ken Anderson

> You could do it with
> To:     user at store notify
> To:     user+*       store notify
> or
> To:     /user(\+.*)?\@domain\.com/        store notify
> --
> Julian Field
> MailScanner thanks transtec Computers for their support
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