Mailman sending to Exchange 2010 Mail service.
Hi Everyone.
We run Mailman as a department. Our core mail service is Exchange 2010. Exchange is running in Shadow Redundancy mode which means it uses a Message DE duplication system. I'm lead to believe that this is based on the Message-ID. (Please correct me if I'm wrong !)
In short, if a user posts to more than 1 list, Exchange dedupes the message on the way back. This means users only get 1 list message. It's causing Chaos !
So:
RFC's and the non PC tampering of message headers aside: How can I use Mailman (or even sendmail) to remove the Message-ID so that Mailman will set its own Message-ID and we can actually send messages to more than one list.
I'm 100% aware that this is not a Mailman issue. If I'm too far OT, I send my apologies.
TIA
-- Alex Collins. Library Systems and Support Officer. Rivermead Library. Tel: 0845 XXX XXXX alex.collins (at) anglia.ac.uk http://libweb.anglia.ac.uk This product is printed with 100% recycled electrons !
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Collins, Alex wrote:
RFC's and the non PC tampering of message headers aside: How can I use Mailman (or even sendmail) to remove the Message-ID so that Mailman will set its own Message-ID and we can actually send messages to more than one list.
You could just delete the Message-ID: from outgoing posts. Then the outgoing MTA (sendmail ?) should add a unique Message-ID: when it handles the message.
To do this, you could modify Mailman/Handlers/SMTPDirect.py by finding the section of bulkdeliver that says
msgtext = msg.as_string(mangle_from_=False)
refused = {}
recips = msgdata['recips']
msgid = msg['message-id']
try:
# Send the message
refused = conn.sendmail(envsender, recips, msgtext)and change it to
msgtext = msg.as_string(mangle_from_=False)
refused = {}
recips = msgdata['recips']
del msg['message-id']
msgid = 'n/a'
try:
# Send the message
refused = conn.sendmail(envsender, recips, msgtext)or if you want Mailman to actually generate a Message-ID:, change it to
msgtext = msg.as_string(mangle_from_=False)
refused = {}
recips = msgdata['recips']
del msg['message-id']
msg['Message-ID'] = Utils.unique_message_id(mlist)
msgid = msg['message-id']
try:
# Send the message
refused = conn.sendmail(envsender, recips, msgtext)-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
Collins, Alex wrote:
Hi Everyone.
I am sure other people will give you pointers to do this, but you don't happen to have more info about the Exchange side doing this do you? I am surprised that it will actually filter messages going to people's mailboxes, even if they have the same Message-ID. I haven't seen this on the Exchange boxes I run, and we use Mailman in a similar way - Exchange distribution lists are no good if you want multiple internal and external recipients to be added and removed from the list.
Andrew.
Collins, Alex wrote:
RFC's and the non PC tampering of message headers aside: How can I use Mailman (or even sendmail) to remove the Message-ID so that Mailman will set its own Message-ID and we can actually send messages to more than one list.
You could just delete the Message-ID: from outgoing posts. Then the outgoing MTA (sendmail ?) should add a unique Message-ID: when it handles the message.
To do this, you could modify Mailman/Handlers/SMTPDirect.py by finding the section of bulkdeliver that says
msgtext = msg.as_string(mangle_from_=False)
refused = {}
recips = msgdata['recips']
msgid = msg['message-id']
try:
# Send the message
refused = conn.sendmail(envsender, recips, msgtext)and change it to
msgtext = msg.as_string(mangle_from_=False)
refused = {}
recips = msgdata['recips']
del msg['message-id']
msgid = 'n/a'
try:
# Send the message
refused = conn.sendmail(envsender, recips, msgtext)or if you want Mailman to actually generate a Message-ID:, change it to
msgtext = msg.as_string(mangle_from_=False)
refused = {}
recips = msgdata['recips']
del msg['message-id']
msg['Message-ID'] = Utils.unique_message_id(mlist)
msgid = msg['message-id']
try:
# Send the message
refused = conn.sendmail(envsender, recips, msgtext)-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
Collins, Alex wrote:
Hi Everyone.
I am sure other people will give you pointers to do this, but you don't happen to have more info about the Exchange side doing this do you? I am surprised that it will actually filter messages going to people's mailboxes, even if they have the same Message-ID. I haven't seen this on the Exchange boxes I run, and we use Mailman in a similar way - Exchange distribution lists are no good if you want multiple internal and external recipients to be added and removed from the list.
Andrew.
participants (3)
-
Andrew Hodgson -
Collins, Alex -
Mark Sapiro