[Mailman-Users] 461 Too many unknown users from your host

[Munzir Taha]

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Hi Sirs,
My mailing list sends me lots of "Bounce action notification" messages. Each 
messge has lots of emails that have permanent fatal errors

First, why one notification cotains lots of emails? Do mailman group many 
bounces in one message or what? Any doc to explain this?

Second, one of the errors I got is:

>>> DATA
<<< 461 Too many unknown users from your host. Possibly an open relay. Address 
added to blacklist. If you think this is not correct please contact 
blocked at gawab.biz and don't forget to include your network address and time 
of seeing this message (#4.3.1)
<someone at gawab.com>... Deferred: 461 Too many unknown users from your host. 
Possibly an open relay. Address added to blacklist. If you think this is not 
correct please contact blocked at gawab.biz and don't forget to include your 
network address and time of seeing this message (#4.3.1)
451 4.4.1 reply: read error from mx2.gawab.com.

I tested my server very well and it's not an open relay so is this still a 
problem I can fix? As far as I understand no user would get subscribed if he 
has no valid email. Which means all those unknown users are used to be known 
at one point of time until something happened. So, what?

- -- 
Munzir Taha
Telecommunications and Electronics Engineer
Maintainer of Fedora Arabic Translation Project
https://listman.redhat.com/mailman/listinfo/fedora-trans-ar
Maintainer of the OpenBugs project page at
http://www.arabic-fedora.org/munzir/OpenBugs.html
Master CIW Designer, ICDL, MOUS, Linux+, LPI 101
Riyadh, SA
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