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April 2019

28 participants
32 discussions

Spam / Email Spoofing Problem (SPF check possible?)
by Valentin Schwarze April 7, 2019

April 7, 2019

Hello, I am the administrator of some mailman lists of the student self-administration of our university. We happend to have some spam issues on our mailman lists. These spammers were able to send emails on our lists through mail spoofing (only faking the From: field in the header is sufficient to get accepted). With a faked sender email adress, which was in accept_these_nonmembers of the list, they were to send spam mails on the lists. Are there any settings that we as administrators of the list could change to end that behavior? For example, is it possible in any way, that Mailman only accepts emails that passed a SPF check? Or any other option to prevent email with forged sender adresses to be distributed through the mailman list? It would be great, if someone knows a solution to that problem! Cheers, Valentin PS: Used Mailman Version is 2.1.18

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Strange behavior with Outlook+Exchange
by Odhiambo Washington April 4, 2019

April 4, 2019

I have a client who is facing a problem unseen before. She's been using MS Outlook to send mail to a Newsletter managed by Mailman. It's all been good, using Approved:Password as the very first line to send her newsletters using Outlook - until we added an Exchange account. Now, when she sends the Newsletter, the below error is returned and the message rejected by Mailman: -----Original Message----- From: Newsletter [mailto:listname-bounces@lists.domain.name] On Behalf Of listname-owner(a)lists.domain.name Sent: Tuesday, April 02, 2019 6:48 PM To: Jane Doe Subject: Monthly Newsletter Message rejected. It appears that this message contains an HTML part with the Approved: password line, but due to the way it is coded in the HTML it can't be safely removed. ----- End Original Message---- I am debating with myself whether it is necessary to adjust any changes related to message composition within Outlook, or make a change within Mailman config to accommodate the issue. -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", grep ^[^#] :-)

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