Re: [GLLUG] British Gas DKIM failure?
Hi, On 17 Jan 2024 at 12:30:15, Henrik Morsing via GLLUG wrote: > On Mon, Jan 15, 2024 at 07:45:25PM +, Carles Pina i Estany via GLLUG > wrote: > > > > Hi, > > > > Hi, > > > > > Side note, almost unrelated. > > > > In a personal/family server I have a nightly script that sends me which > > emails have been rejected by the server. Why? Postfix, in my > > configuration, rejects some emails. For example, from the Birmingham > > Zoo, bto.org, etc. so I get an email in the morning with the rejections > > of the day before and if I want to I add them in sender_access. In 1.5 > > years I have 14 domains there. > > > > When time allows, I will add the DKIM rejections as well, based on your > > case. Just in case. So thanks for sharing. I wonder if DKIM is rejecting > > some "legit" (or "expected") email. > > > > Sounds very useful, something you can share or is it top secret? Nothing top secret. It's not a public script because I have it in a repo with internal tools for the personal server. What I have detects the emails rejected by "Client host rejected: cannot find your reverse hostname" and "Client host rejected: cannot find your hostname". This is the script that parses the Postfix logs for those errors: https://gist.github.com/cpina/e97c0da58f42a0db83b3886674de4410 I call (from cron) it from this Bash script: https://gist.github.com/cpina/79b4f425facb6b97aaea4c572307de3a The email looks like this: https://gist.github.com/cpina/4c49df824742c5ae1d273170939795be The reason that I wrote it was, as I said, I set up postfix to reject emails based on the hostname (it reduced Spam) but some, very few services, have the email set up in a way that is wrong. Then I can see them and I add them in sender_access in Postfix. What I will do, some day, is make sure that emails rejected because of DMARC, are also there. So, if I expected an email from britishgas or whoever and it appears in the morning email the day after, I would know faster. Not ideal, but email seems full of not-ideal things :-) Cheers, -- Carles Pina i Estany https://carles.pina.cat signature.asc Description: PGP signature -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
Re: [GLLUG] Printer page layouts
On Wednesday, 17 January 2024 11:11:30 GMT John Southern via GLLUG wrote: > Hi Chris, > > The texlive-extra-util package may be able to help with the pdfjam and > pdfbook2. You could pipe these together with the pdftk-java package which > has a shuffle option. > > Although I think something like LibreOffice Writer has all these options > including the brochure print. > > Regards > John Thanks for the suggestion, I will look again. My old RiscPC was switched off about 10 years ago when I was being treated in hospital. I managed to survive and slowly recovered, the HDD never recovered. Apparently RiscOS took over the Computer Concepts Impression series, so I am also looking at installing https://www.riscosopen.org/content on to a replacement disk on my original RISCPC There is even a version of RISCOS for the RaspberryPi. A friend who does not know much about computers picked up a HDD that was ticking and not reaching operating speed. He turned it upside down and dropped some light oil on to the bearing, and a few days later it started working. I found it difficult to believe, but would be willing to try. -- Chris Bell www.chrisbell.org.uk -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
Re: [GLLUG] British Gas DKIM failure?
On Mon, Jan 15, 2024 at 07:45:25PM +, Carles Pina i Estany via GLLUG wrote: Hi, Hi, Side note, almost unrelated. In a personal/family server I have a nightly script that sends me which emails have been rejected by the server. Why? Postfix, in my configuration, rejects some emails. For example, from the Birmingham Zoo, bto.org, etc. so I get an email in the morning with the rejections of the day before and if I want to I add them in sender_access. In 1.5 years I have 14 domains there. When time allows, I will add the DKIM rejections as well, based on your case. Just in case. So thanks for sharing. I wonder if DKIM is rejecting some "legit" (or "expected") email. Sounds very useful, something you can share or is it top secret? Regards, Henrik Morsing -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
Re: [GLLUG] British Gas DKIM failure?
On Sun, Jan 14, 2024 at 06:06:56PM +, Marco van Beek via GLLUG wrote: Hi, Hi, So looking at this, and Andy's email with what he sees, it looks like his British Gas emails are coming from a different place to yours. His are coming from SalesForce, and yours are coming from Mail Jet, so I don't think we can draw much from that. I think the next thing to look at is maybe this is an SSL issue, so I found thse: https://github.com/openssl/openssl/issues/8010 https://portal.microfocus.com/s/article/KM15515?language=en_US Good find, very odd issue. Can try if that helps, I might have to contact BG to find out what they are emailing me and how frequent, to verify if it works. That would indicate a possible issue within some Intel Goldmont processors, and can be fixed with telling OpenSSL not to use the hardware for this This is running on a nanode though, and I am getting: vendor_id : AuthenticAMD Regards, Henrik Morsing -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
Re: [GLLUG] Printer page layouts
Hi Chris, The texlive-extra-util package may be able to help with the pdfjam and pdfbook2. You could pipe these together with the pdftk-java package which has a shuffle option. Although I think something like LibreOffice Writer has all these options including the brochure print. Regards John On Thu, 11 Jan 2024 at 15:15, Chris Bell via GLLUG wrote: > Hello, > A long time ago now, I had a package for Acorn computers named Acorn > Publisher > which could adjust the printer whole-sheet layout for multiple pages on > multiple sheets. > A friend working as a professional "jobber" printer would pass an > individual > file through a chain of processes using software running on multiple > operating > systems to adjust edge definition, colour balance, gamma, random noise, > and > perhaps select individual colours for Lithographic Masters, then finally > Acorn > Publisher would lay out pages so that the sheets could be guillotined and > would appear in the correct order after binding. It worked with any > original > shape and size of sheet (perhaps A4, perhaps oversize A0+), to create any > final > shape and size ready for binding. > I used it to quickly and easily double-side print something like A6 > pamphlets > or instuction manuals on to A4, then I would cut the pages using a hand > operated guillotine, and simply staple the result. It could place page 1 > inside or on the front, alongside the last page, with the centre pages > together. If the printer could not print double sided it could print every > other side of sheet, then turn the stack and print the other sides. > Is there anything that is able to do the same job in Linux/Debian? > Thanks for any info. > -- > Chris Bell > www.chrisbell.org.uk > > > > -- > GLLUG mailing list > GLLUG@mailman.lug.org.uk > https://mailman.lug.org.uk/mailman/listinfo/gllug > -- GLLUG mailing list GLLUG@mailman.lug.org.uk https://mailman.lug.org.uk/mailman/listinfo/gllug
