All mails do not reach to all users...

Dear experts,
I had discuss the similar issue couple of Months back here. Actually the mails sent by the senders are not reaching to all the subscribers of my mailing list. I got some steps here and forwarded them to our web service provider but they could not resolve the issue. After facing huge problems, I finally shifted to the new service provider and they are Internationally known as very good service provider and their mail delivery and other services seem to be working fine but the issue of non delivery of E-mails to some users still remain there. I have discussed this matter with other moderators of two different mailing list and they told me that they also confront the same issue some time. so what does it mean? Is this a bug on Mailman? Can we expect not to be happened in mailman 3 in the coming future?
Please, I would appreciate if someone can make me understand to do something in simple steps.
Regards,
Amit Bhatt

On 5/8/2012 9:43 AM, Amit Bhatt wrote:
No, it is not a bug in Mailman and it probably will be no different under Mailman 3.
You have to follow the mail through the various MTAs between your Mailman server and the recipient server.
Typically, you or your service provider will find a log message indicating the original email message was accepted for delivery by the recipient's ISP, but the recipient never gets the mail. At this point, All you can do is provide the recipient with the full log message containing timestamp and the receiving server's queue ID, and then the recipient has to take this up with their ISP.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

So it means we have to do it every time when a new member join us? because such problem is faced by almost every member of our mailing list. Suppose I do send 20 messages a day, many of our subscriber get only 10 messages. Similarly, if some others send 20 messages, I and other subscribers get only a few messages, but not all 20. This is just for example.
Thanks,
amit Bhatt ----- Original Message ----- From: "Mark Sapiro" <mark@msapiro.net> To: "Amit Bhatt" <misterbhatt@gmail.com> Cc: <Mailman-Users@python.org> Sent: Wednesday, May 09, 2012 6:16 AM Subject: Re: [Mailman-Users] All mails do not reach to all users...

Amit Bhatt wrote:
This is not a Mailman issue. It seems likely that your mail is triggering various ISPs spam filters based on its content. This can only be resolved by communicating with the ISPs involved. If you can convince them that your lists are confirmed opt-in (aka double opt-in) and that everyone on your lists have made an informed, affirmative decision to be on the list and that anyone can easily unsubscribe, some of them may whitelist you.
No one said this was easy. Quite a few years ago, I was 'felt out' for my interest in working for an email list provider on a full time basis doing exactly this kind of liason with ISPs. I wasn't interested in any paid employment at the time and even if I had been, I wouldn't have been interested in that one. I can only imagine that the magnitude of this job has grown significantly since then.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

On 5/8/2012 9:43 AM, Amit Bhatt wrote:
No, it is not a bug in Mailman and it probably will be no different under Mailman 3.
You have to follow the mail through the various MTAs between your Mailman server and the recipient server.
Typically, you or your service provider will find a log message indicating the original email message was accepted for delivery by the recipient's ISP, but the recipient never gets the mail. At this point, All you can do is provide the recipient with the full log message containing timestamp and the receiving server's queue ID, and then the recipient has to take this up with their ISP.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

So it means we have to do it every time when a new member join us? because such problem is faced by almost every member of our mailing list. Suppose I do send 20 messages a day, many of our subscriber get only 10 messages. Similarly, if some others send 20 messages, I and other subscribers get only a few messages, but not all 20. This is just for example.
Thanks,
amit Bhatt ----- Original Message ----- From: "Mark Sapiro" <mark@msapiro.net> To: "Amit Bhatt" <misterbhatt@gmail.com> Cc: <Mailman-Users@python.org> Sent: Wednesday, May 09, 2012 6:16 AM Subject: Re: [Mailman-Users] All mails do not reach to all users...

Amit Bhatt wrote:
This is not a Mailman issue. It seems likely that your mail is triggering various ISPs spam filters based on its content. This can only be resolved by communicating with the ISPs involved. If you can convince them that your lists are confirmed opt-in (aka double opt-in) and that everyone on your lists have made an informed, affirmative decision to be on the list and that anyone can easily unsubscribe, some of them may whitelist you.
No one said this was easy. Quite a few years ago, I was 'felt out' for my interest in working for an email list provider on a full time basis doing exactly this kind of liason with ISPs. I wasn't interested in any paid employment at the time and even if I had been, I wouldn't have been interested in that one. I can only imagine that the magnitude of this job has grown significantly since then.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (2)
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Amit Bhatt
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Mark Sapiro