[Mailman-Users] Re: Delayed messages

[Mark Sapiro]

On 10/8/22 06:28, Robert Heller wrote:


Sometimes what happens is a mail provider like Yahoo (@yahoo.com, @aol.com,
@verizon.net, and some others) or Microsoft (@hotmail.com, @outlook.com,
others) and will greylist you and delay / defer E-Mail. You MTA will re-try
every so often (every hour, 1/2 hour, etc.) for up to 5 days. Generally,
eventually the mail gets through, but it could takes hours or days. There is
not much you can do about this.


This is not the issue here. Here, the issue is in delivery from Mailman 
to the outgoing MTA (probably exim in the case of cPanel) and not in 
delivery from the MTA to the recipients.


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

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[Mailman-Users] Re: Delayed messages

[Mark Sapiro]

On 10/8/22 01:41, Christian via Mailman-Users wrote:

Good morning

I have several unmoderated lists on Mailman 2.1.38 running on cPanel (106.0.8).

The messages sent to the lists are almost immediately visible in the list 
archives, but are sent to the subscribers with a - sometimes huge - delay. 
Mostly it is 20 - 40 minutes, but sometimes it is more than one hour.



Mailman's `out` queue is backlogged. See 
https://mail.python.org/archives/list/mailman-users@python.org/message/CAKZUAYSGKKEQLTK4RTB2DVOYVJUNIQX/ 
and perhaps other hits from searching the archive for `backlogged out 
queue`. Also see .


Unfortunately you are at the mercy of your cPanel host to fix this.

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[Mailman-Users] Re: Delayed messages

[Mark Sapiro]

On 10/8/22 07:06, Bill Cole wrote:


It is my understanding that Mailman only puts a message in the archive 
after it has handed off deliveries to the local MTA.


This is not correct. Mailman processes messages through a pipeline of 
handlers (see 
). 
Towards the end of the pipeline are handlers `ToArchive` and 
`ToOutgoing`. These handlers simply queue the message for the respective 
ArchiveRunner and OutgoingRunner processes which process their queues 
asynchronously from each other.


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[Mailman-Users] Re: Delayed messages

[Bill Cole]

On 2022-10-08 at 09:32:52 UTC-0400 (Sat, 8 Oct 2022 15:32:52 +0200)
Christian via Mailman-Users 
is rumored to have said:

Hello Robert Heller. On Sat,  8 Oct 2022 09:28:50 -0400 (EDT), you 
wrote:



What sorts of e-mail addresses are delayed.  Are *all* users seeing
delays or only some (eg only people with @yahoo.com or
@hotmail.com addresses?).


It concerns all addresses - even those who are on the same server / 
same domain.


Do you have access to your server's mail queue?  Do you have 
command-line

access to your server?


No, unfortunately not. It is a cPanel installation on a virtual 
server.


It is my understanding that Mailman only puts a message in the archive 
after it has handed off deliveries to the local MTA. cPanel historically 
(circa 2018) had queue run timings for Exim (the MTA) that were unfit 
for mailing lists.  I know cPanel was made aware of the issue but I do 
not recall whether they pushed out a fix or just documented a 
configuration fix.  You may not be able to change or even see the Exim 
config, since I believe cPanel manages Exim at the host-wide level 
(using WHM) which customers don't generally have access to. You should 
talk to your provider about how Exim is configured.





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[Mailman-Users] Re: Delayed messages

[Robert Heller]

What sorts of e-mail addresses are delayed.  Are *all* users seeing delays or 
only some (eg only people with @yahoo.com or @hotmail.com addresses?).

Do you have access to your server's mail queue?  Do you have command-line 
access to your server?

Sometimes what happens is a mail provider like Yahoo (@yahoo.com, @aol.com,
@verizon.net, and some others) or Microsoft (@hotmail.com, @outlook.com,
others) and will greylist you and delay / defer E-Mail. You MTA will re-try
every so often (every hour, 1/2 hour, etc.) for up to 5 days. Generally,
eventually the mail gets through, but it could takes hours or days. There is
not much you can do about this.

Sometimes what is happening is that you have set Mailman to be too
"aggressive" about sending mail, and some E-Mail providers don't like that.
There are some Mailman settings for this -- this will add some delay, but
things will generally flow better overall. Other times, it is that some of
*your* subscribers are marking the message they are getting from your list as
spam and their E-Mail provider(s) are "learning" that your list is a spam
source and the provider's spam filter is marking messages from your list as
spam and either rejecting or quarentining the messages from your list.

At Sat, 8 Oct 2022 10:41:04 +0200 Christian  wrote:

> 
> Good morning 
> 
> I have several unmoderated lists on Mailman 2.1.38 running on cPanel 
> (106.0.8). 
> 
> The messages sent to the lists are almost immediately visible in the list 
> archives, but are sent to the subscribers with a - sometimes huge - delay. 
> Mostly it is 20 - 40 minutes, but sometimes it is more than one hour. 
> 
> This makes replying difficult for the users because they might give an answer 
> which is already given by someone else, or they miss a clarification. 
> 
> Is this normal to Mailman 2 on cPanel, or is there any possibility to speed 
> up the message delivery? 
> 
> Thank you, Christian   
> 

-- 
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[Mailman-Users] Re: Delayed messages

[Christian via Mailman-Users]

Hello Robert Heller. On Sat,  8 Oct 2022 09:28:50 -0400 (EDT), you wrote:

> What sorts of e-mail addresses are delayed.  Are *all* users seeing 
> delays or only some (eg only people with @yahoo.com or 
> @hotmail.com addresses?).

It concerns all addresses - even those who are on the same server / same 
domain. 

> Do you have access to your server's mail queue?  Do you have command-line 
> access to your server?

No, unfortunately not. It is a cPanel installation on a virtual server. 

Christian 
 
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