Divided we stand.
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Spam to aol.com
Some open relay spams a lot with this kind of messages: Delivered-To: abondarenko@gmail.com Received: by 2002:aa6:c2c8:0:b0:16a:1e8a:2c54 with SMTP id i8csp1735690lkp; Fri, 17 Dec 2021 09:01:32 -0800 (PST) X-Google-Smtp-Source: ABdhPJwYX2tMoVU+eJjTP1qslWMcUikk61IbaTmPrak3WWvb1fbofSlY0ftgYqX9WBAiH5rL/PIy X-Received: by 2002:a2e:bf1e:: with SMTP id c30mr3535718ljr.408.1639760491902; Fri, 17 Dec 2021 09:01:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1639760491; cv=none; d=google.com; s=arc-20160816; b=Pp3pD2GTGMOH8vYn+zs+n31Y3/RsUhm8SrzMWHMf4MAqnnojNhRemwUANtHgYhjd/9 M9F2iuIpJkYkdd5SqyzP2623PIWs8ahgMoEWWU5s9exmqAhICUtDc0BODLwWpzw1pbYi +XoA0yQkL79W+wWdCnn2D+EGR1LCr2dxnrH4A3OgsTTXG573/yQ3fAxMvT/qdSTCHf+X VtaHKSEHgU5vkfo20EF6hKF9h46d/KyaMspGtr4XhVeUPgvl3EWf/LilXOnbcctYH+q7 Q2ys7jcbeyltrTxwhVhJAy0gUu2ozZvSYh1SqR5MeWSbIb5/ClGinRy5cg5nimLi2jig…
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Postfix and greylisting
Spam became a noticeable threat for the mail servers many years ago. No servers today could be running without being hardened against the spam: according to some reports up to 75% of all the email traffic is spam. It’s noticeable from network capacity, hardware and electricity consumption even if you run a small company mail…
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Postfix mail server with DKIM
Installation and configuration of the mail server (Mail Transfer Agent, MTA) is one of the typical tasks any system administrator faces. Here we will cover the task and by the end of the article will have CentOS 7 with Postfix mail server that listens to he 25 port (SMTP) and delivers messages for the selected…
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Moved to Hetzner and CentOS 8
Turns out I had lost my keys to the Oracle Cloud and the Oracle Cloud lost my PTR record somehow, so the Gmail started to junk and bounce my mail. I decided to go for a Faster.cz (who’s my home provider) VPS, but they had 8GB SSD as an option for a small host, which…
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Снова о тяжкой (нет) доле эмиграции в ЕС
Буквально вчера опять обсуждали тему, которую по делу стоило бы закрыть раз и навсегда и никогда не открывать: “эмигранты страдают, но не показывают свою боль”, по этому я хочу собрать мысли по поводу того, что действительно для меня изменилось с переездом, я надеюсь, что это поможет колеблющимся решиться в ту или в другую сторону. TL&DR:…
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Fish shell MOTD with lolcat and cowsay
Setting fish shell message of the day with all the crazy stuff you need for a daily work: Full version: https://gist.github.com/angstbear/a0499e955ecf282c06c4a7dd9cb8bd35
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Трактор в Чехию
С чего все началось? Я работал в Лаборатории Касперского, очень много путешествовал по работе. Я видел ЮАР, Иорданию, Японию и вообще ЮВА, естественно, много раз был по работе в Европе. Я делал вялые попытки что-то поискать внутри Касперского в районе Эмиратов. Столкнулся с тем, что если у тебя жена и дети, то особенно там не…
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My blog
I write mostly about security, mail, web and linux. My contacts are: mail://me@andreybondarenko.com and shaman007 all around Telegram, FB chat, WhatsApp. Primary use me@andreybondarenko.com and @shaman007:matrix.andreybondarenko.com Buy me a beer / Автору на пиво: shaman007@andreybondarenko.com (paypal)17QxrNyk9BCrP6LGUbqCNnXCzu4oeoYKaH (btc) 0x57500960FBC986225209E597D5B97065A9A10043 (eth) Links turned out to be useful / не потерявшие актуальности ссылки: Растаможка автомобиля из России в ЧехииПоиск работы…
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OK Google Mail!
Starting around 11 April Gmail started to mess with the TLS. If in the “send as” settings you had anything in the MX hostname, that does not match what’s going on after your @ and your cert, your mail server got a reject, even if his origin matches the certificate. I had ‘mx.andreybondarenko.com’, had to…
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Another site move
Aegea is a terrible blog platform, I hate it. No plugins, no security concepts, updating is a pain in the ass. So I need to move my blog yet another time as I’d done it in 2015. Maybe this time the blog would be more alive. I need ensure that all old URLs would be…
Got any book recommendations?