[Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Joshua Beall
Hi All,

I have a client who wants to setup a very *large* mailing list.  Right now 
she has about 4500 people on the list (including myself).

However, she has reported that people aren't getting her emails (she sends 
only about one per month), and she's tried to send two so far.  They show up 
in the archives, so I know that they are at least being received by mailman. 
Furthermore, I have been getting them - so it *seems* like it is working.

But she absolutely insists that they are not going out, saying that she has 
asked other people who are subscribed to the list, and they have not 
received her message.

Is there an error log I can take a look at it?  And also, do you know 
offhand if I am asking for trouble with such a large list?  Are there 
problems that crop up when I have such a large list?

If mailman is not able to handle such a large mailing list, what do you 
recommend?  I would prefer something open source that will run on a LAMP 
stack.

Thanks for any feedback!

Sincerely,
  -Josh 



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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Carl Zwanzig
In a flurry of recycled electrons, Joshua Beall wrote:

 I have a client who wants to setup a very *large* mailing list.  Right now 
 she has about 4500 people on the list (including myself).

Which actually qualifies as only a moderate size, there are 15k+ lists
using MM.

 However, she has reported that people aren't getting her emails (she sends 
 only about one per month), and she's tried to send two so far.  They show up 
 in the archives, so I know that they are at least being received by mailman. 
 Furthermore, I have been getting them - so it *seems* like it is working.

Yep, it's basically working.

 But she absolutely insists that they are not going out, saying that she has 
 asked other people who are subscribed to the list, and they have not 
 received her message.

Your best (and only) option is to look at the send log of the MTA.
Well, I lied, look at the member options and make sure that the other
members aren't set for no mail.  You could also add a few more test
addresses...

z!

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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Mark Sapiro
Joshua Beall wrote:

I have a client who wants to setup a very *large* mailing list.  Right now 
she has about 4500 people on the list (including myself).


This is not particularly large for a Mailman list. See
http://www.python.org/cgi-bin/faqw-mm.py?req=showfile=faq01.015.htp


However, she has reported that people aren't getting her emails (she sends 
only about one per month), and she's tried to send two so far.  They show up 
in the archives, so I know that they are at least being received by mailman. 
Furthermore, I have been getting them - so it *seems* like it is working.

But she absolutely insists that they are not going out, saying that she has 
asked other people who are subscribed to the list, and they have not 
received her message.

Is there an error log I can take a look at it?  And also, do you know 
offhand if I am asking for trouble with such a large list?  Are there 
problems that crop up when I have such a large list?


There are mailman logs, particularly 'smtp' and 'smtp-failure', but
also 'error'.

Also look at your MTA logs.


Also, search the FAQ wizard
Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py
for 'tuning'


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San Francisco Bay Area, Californiabetter use your sense - B. Dylan

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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Hunter Hillegas
What is the largest known MM list out there?

We're thinking of using it for a list that currently contains 400,000
entries, though probably about 20% of those should be discarded/are dead.

 From: Carl Zwanzig [EMAIL PROTECTED]
 Date: Wed, 16 Feb 2005 14:04:07 -0800 (PST)
 To: Joshua Beall [EMAIL PROTECTED]
 Cc: mailman-users@python.org
 Subject: Re: [Mailman-Users] Mailman list size limitations?
 
 
 I have a client who wants to setup a very *large* mailing list.  Right now
 she has about 4500 people on the list (including myself).
 
 Which actually qualifies as only a moderate size, there are 15k+ lists
 using MM.


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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Chuq Von Rospach
On Feb 16, 2005, at 1:50 PM, Joshua Beall wrote:
I have a client who wants to setup a very *large* mailing list.  Right 
now
she has about 4500 people on the list (including myself).
4500 is not large. I've run lists on mailman over 40K. I run lists 
where the testing group is probably 4500...

Is there an error log I can take a look at it?
~mailman/logs
also, the logs generated by the mail delivery beast as well.
 And also, do you know
offhand if I am asking for trouble with such a large list?  Are there
problems that crop up when I have such a large list?
If mailman is not able to handle such a large mailing list, what do you
recommend?
mailman's not the problem. if it's a capacity issue, it's the computer 
that's likely too slow/small, but even there, I wouldn't except 
problems with 4,500 users on any platform remotely recent.

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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Chuq Von Rospach

What is the largest known MM list out there?
I can go to about 50K, on moderately slow hardware (sun E250). An 
xserve can handle that without breaking a sweat.


We're thinking of using it for a list that currently contains 400,000
entries, though probably about 20% of those should be discarded/are 
dead.

I'd say you're probably asking for problems, unless you use multiple 
lists and an umbrella. It might work, I'd be really curious how the 
internal pickles scale to that. I think you're likely to his disk I/O 
issues.

When my stuff started getting large, I wrote systems customized for 
large-scale delivery and management. My guess would be without a good, 
random backing store database for the subscriber list, anything that 
large would really struggle. I'd definitely want that subscriber list 
in SQL somewhere.


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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread Mark Sapiro
Hunter Hillegas wrote:

What is the largest known MM list out there?

See
http://www.python.org/cgi-bin/faqw-mm.py?req=showfile=faq01.015.htp


Also, see the thread at
http://mail.python.org/pipermail/mailman-users/2005-February/042502.html
for an idea of the kinds of problems you run into with large lists (on
the order of 100K members).

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San Francisco Bay Area, Californiabetter use your sense - B. Dylan

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Re: [Mailman-Users] Mailman list size limitations?

2005-02-16 Thread John W. Baxter
On 2/16/2005 13:50, Joshua Beall [EMAIL PROTECTED] wrote:

 However, she has reported that people aren't getting her emails (she sends
 only about one per month), and she's tried to send two so far.  They show up
 in the archives, so I know that they are at least being received by mailman.
 Furthermore, I have been getting them - so it *seems* like it is working.

Is there anything in common in the domains to which the failing messages are
being addressed?  (One domain or a few domains fail?)  If so, she should
find out whether those domains are willing to talk to her server (or are
willing to talk to her server when it sends many recipients in the same
message or many messages in the same connection).

If personalization is on to any degree, then it's one recipient per message
so that's not an issue.

The outgoing MTA log should help a lot.

  --John

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