Showing posts with the label linux

OpenDKIM on Debian: Skip that L= tag

A reader on the Mailop list pointed out that the Debian Linux wiki has a page for OpenDKIM and that this page can be interpreted as offering a suggestion to implement the "l=" option when signing messages with DKIM. I also think there's a typo in one bit (in the Important DKIM Options section) that perhaps means to say that "Unless you are running a list server (which s…
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Setting the default from domain in unix mail

If you've ever typed "echo hi | mail user@example.com" from a *nix prompt. then you're familiar with the unix "mail" command, typically part of GNU Mailutils , which, if not already installed on your linux box, you added via "yum install mailuti…

Let's send email....with curl!

Hey, *nix users! Did you know that you can send email using cURL? If you weren't aware, cURL "is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various network protocols. The name stands for 'Clien…

How to create an email alert for SSH logins

Here's a neat unix/linux email trick: How to get notified via email for SSH logins , courtesy of Tech Republic's Jack Wallen. And it uses your Gmail account to send the mail, like I offered up back in 2020 (great minds think alike). You don't NEED to implement that…

Quick and Easy Email Attachments in Linux

Need to export a file from Linux via email? Got  uuencode ? Do you even remember  uuencode ? It's how we used to encode files for file sharing, back before you were born. Because I'm old. Here's a handy one-liner that will wrap your file up as a UUEncoded attachment…

mb2md: A very useful linux/unix email utility

The linux/unix tool  mb2md  does one thing and it does it well: It takes and "mbox" mailbox file and converts it into Maildir files. In " mbox " mailbox format, your entire mailbox is one file. Each message is delimited with a blank line and the next line st…

Let's send mail...through Gmail!

With a bit of help from an online tutorial , I've figured out how to relay outbound mail through Gmail. (Of course, that means that I'm sending mail out through a specific Gmail account, not just randomly relaying a bunch of mail through Gmail as if it were an open rela…

Oops: Gmail Spam Filter Changes Bite Linus Torvalds

As reported on Slashdot: "[After recent spam filter changes at Gmail, Linux inventor Linus] Torvalds said his own experience [is] that around 30 per cent of the mail in his spam box turned out not to be spam." I see lots of false positives in my own mailboxes as well,…