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Nick Holden wrote:
> Hi all,
>
> Managed a pretty straightforward upgrade and migration the other day, so
> I should start by saying thanks and well done to the team for making the
> upgrade process so painless.
>
> However, we've hit a slight snag, which probably couldn't have been
> predicted, thanks to the idiot spammers.
>
> One of our lists has a queue of about 100 email addresses waiting to be
> moderated into subscribers or rejected. They are all the result of spam
> being sent randomly to listname-subscribe, I think. Anyway, the first of
> them is completely blank.
>   
Probably it is not recommended to use the  "listname-subscribe" feature 
because of  spam.  You can un-plug it by remove this alias from 
"list_aliases.tt2" template. At least you should create a subscription 
scenario requesting authentication for subscription, this will solve 
your problem.
> Naturally, no-one would actually want to subscribe a completely blank
> email, but somehow, sympa has allowed it to get on to the moderation
> list. However, when we try to delete it from the list we get a syntax
> error.
>   
That's seams a bug. But the bug is not in the moderation web feature but 
in  the process from sympa.pl that  accept such message for moderation. 
They should be refused just we received by a static control (not by 
scenario).

What you can do is "no nothing" thoses messages will expire and they 
will be removed automatically. I added a bug report about it.

Thanks
Serge Aumont