Re: [Mailman-Users] Best way to slow down all the spam to my lists?
Chromatest J. Pantsmaker writes: > I had sent some test email from gmail and several hours later those > test messages didn't pass. Maybe I goofed something along the way. If the GMail address used to send is the same as the address subscribed to the test list, you won't see it because GMail deduplicates aggressively. There is no way to fix this in GMail. If you are testing from GMail you *must* use a separate address as the recipient. Check the Mailman and the Postfix logs to see what your Mailman host thinks is happening. Steve -- Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
Re: [Mailman-Users] Best way to slow down all the spam to my lists?
"Stephen J. Turnbull" writes: > Chromatest J. Pantsmaker writes: > > > I had sent some test email from gmail and several hours later those > > test messages didn't pass. Maybe I goofed something along the way. > > If the GMail address used to send is the same as the address > subscribed to the test list, you won't see it because GMail > deduplicates aggressively. There is no way to fix this in GMail. If > you are testing from GMail you *must* use a separate address as the > recipient. Also, if you are testing greylisting from a GMail account, GMail tends to retry messages from another random outgoing server, so it may take considerable time before GMail happens to randomly pick an outgoing server it has already used and greylisting can confirm the same message from the same user at the same server... (It would be nice if GMail would assign an outgoing message to one server and just retry from there) Keith -- from my mac to yours... Keith Seyffarth mailto:w...@weif.net https://www.weif.net/ - Home of the First Tank Guide! https://www.rpgcalendar.net/ - the Montana Role-Playing Calendar http://www.miscon.org/ - Montana's Longest Running Science Fiction Convention -- Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
Re: [Mailman-Users] Best way to slow down all the spam to my lists?
On 12/13/19 9:02 PM, Mark Sapiro wrote: As postgrey learns, it will remember triplets (sender, sending IP, recipient) and not delay them and in addition will whitelist domains that retry successfully more than a few times. The bigger senders are doing things now (more than ever) that they weren't doing 15+ years ago. Now farms of servers will try to contact you. The message may first try from one IP, then from another IP, then from a 3rd It may eventually try from the same IP and make it through. I think most grey list solutions have an option to specify the network (frequently configured a a /24) for the sending IP. This significantly helps with different servers in the same server farm trying to resend messages. Another option that doesn't have this (state based) limitation is nolisting. (TCP RST from first MX and subsequent MX(s) accept email.) -- Grant. . . . unix || die smime.p7s Description: S/MIME Cryptographic Signature -- Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
Re: [Mailman-Users] Best way to slow down all the spam to my lists?
Grant Taylor via Mailman-Users writes: > On 12/13/19 9:02 PM, Mark Sapiro wrote: >> As postgrey learns, it will remember triplets (sender, sending IP, >> recipient) and not delay them and in addition will whitelist domains >> that retry successfully more than a few times. > > The bigger senders are doing things now (more than ever) that they > weren't doing 15+ years ago. Now farms of servers will try to contact > you. The message may first try from one IP, then from another IP, then > from a 3rd It may eventually try from the same IP and make it through. > > I think most grey list solutions have an option to specify the network > (frequently configured a a /24) for the sending IP. This significantly > helps with different servers in the same server farm trying to resend > messages. Some greylisting solutions also allow you to whitelist a domain or subdomain, but this can result in spammers spoofing that domain getting through... Keith -- from my mac to yours... Keith Seyffarth mailto:w...@weif.net https://www.weif.net/ - Home of the First Tank Guide! https://www.rpgcalendar.net/ - the Montana Role-Playing Calendar http://www.miscon.org/ - Montana's Longest Running Science Fiction Convention -- Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
Re: [Mailman-Users] Best way to slow down all the spam to my lists?
On 12/14/19 4:29 PM, Keith Seyffarth wrote: > Grant Taylor via Mailman-Users writes: > >> On 12/13/19 9:02 PM, Mark Sapiro wrote: >>> As postgrey learns, it will remember triplets (sender, sending IP, >>> recipient) and not delay them and in addition will whitelist domains >>> that retry successfully more than a few times. >> The bigger senders are doing things now (more than ever) that they >> weren't doing 15+ years ago. Now farms of servers will try to contact >> you. The message may first try from one IP, then from another IP, then >> from a 3rd It may eventually try from the same IP and make it through. >> >> I think most grey list solutions have an option to specify the network >> (frequently configured a a /24) for the sending IP. This significantly >> helps with different servers in the same server farm trying to resend >> messages. > Some greylisting solutions also allow you to whitelist a domain or > subdomain, but this can result in spammers spoofing that domain getting > through... > > Keith > > Unless you only whitelist domains which use SPF, then SPF will catch the spoofers. -- Richard Damon -- Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org
