Avoid "subscribe spam"

[ldidry]

• if the subscriber is already is the subscription to moderate list, Sympa should not send a new mail to moderators
• if the subscriber is in the blacklist, no mail shoud be sent either.

We had the case where someone in the blacklist send subscription mails again and again, and the moderator got mail notification again and again.

Seen on 6.2.16

[ikedas]

Hi @ldidry,

Can you show us configuration of your Sympa, especially things below?

• subscribe parameter in list config
• use_blacklist parameter in sympa.conf or (if any) robot.conf

[ldidry]

The list config:

config.0:subscribe owner

sympa.conf:

use_blacklist   send,create_list

Ok, I see now that sympa.conf should use subscribe as well, is it that?

What are the valid values for use_blacklist? I'll add them to the documentation.

[ikedas]

Ok, I see now that sympa.conf should use subscribe as well, is it that?
What are the valid values for use_blacklist? I'll add them to the documentation.

Yes, in the second case you reported, you may have to add subscribe to the value of use_blacklist parameter. If the problem disappeared by this change, the second case is not a bug.

I'll investigate the first case further.

[ikedas]

Hi @ldidry,
About the firset case:

• if the subscriber is already is the subscription to moderate list, Sympa should not send a new mail to moderators

Please show us:

• Configuration of the list in question.
• Procedure to reproduce problem.

Thanks.

[ikedas]

Hi @ldidry,

With PR #390, I think the first case will never occur, because, for example in subscribe.auth scenario:

# subscribe.auth
title.gettext subscription request confirmed

!equal([sender],[email])           smtp,dkim,md5,smime -> request_auth([email])
is_subscriber([listname],[email])  smtp,dkim,md5,smime -> do_it
true()                             smtp,dkim           -> request_auth([email])
true()                             md5,smime           -> do_it

If the user has already subscribed, do_it is returned, and subscribe request will fail with a response "The User '...' is already subscriber of list '...'."

[ldidry]

Please show us:

Configuration of the list in question.
Procedure to reproduce problem.

Sorry, I didn't see the message. And now, I don't remember which list it was.

Glad to see that #390 will solve the case.

I'll test the case once I updated our Sympa and applied the patch (in two days)

[ikedas]

Solved. Thanks for reporting bug! Closing.