#Postfix 3.10.2 has been released (#SMTP / #MailServer / #MTA) http://postfix.org/
postfix.orgThe Postfix Home Page
Recent searches
Search options
#smtp
1 post1 participant0 posts today
𝚜𝚎𝚕𝚎𝚊 
I find it really sad that Trusteddomainproject (authors of OpenDMARC) is basically dead
I interpret the following
Apr 20 18:38:09 skapet spamd[52874]: (GREY) 117.53.153.22: <> -> <spfilter-2.sel01.mschosting.com-1745167076-testing@ehtrib.org>
As a sign there are still, er, individuals out there who think SMTP callbacks were a good idea.
Please have them read "Twenty-plus years on, SMTP callbacks are still pointless and need to die" (2017) https://nxdomain.no/~peter/twenty-plus_years_on_smtp_callbacks_are_still_pointless.html
nxdomain.noTwenty-plus years on, SMTP callbacks are still pointless and need to die
#curl 8.13.0 has been released (#libcurl / #Haxx / #DICT / #FILE / #FTP / #FTPS / #Gopher / #HTTP / #HTTPS / #IMAP / #IMAPS / #LDAP / #LDAPS / #MQTT / #POP3 / #POP3S / #RTMP / #RTMPS / #RTSP / #SCP / #SFTP / #SMB / #SMBS / #SMTP / #SMTPS / #Telnet / #TFTP / #WebSocket / #SOCKS4 / #SOCKS5 / #SCRAM / #TLS / #HTTP2 / #HTTP3) https://curl.se/
curl.securl
Deploy a Self-Hosted #SMTP Relay with #Mailcow on #Ubuntu #VPS (10 Minute Quick-Start Guide) This article provides a guide to deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS.
When you deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS, you can manage email delivery securely and efficiently. This guide walks you through installing and configuring Mailcow for SMTP relaying.
What is an ...
Continued 
https://blog.radwebhosting.com/deploy-a-self-hosted-smtp-relay-with-mailcow-on-ubuntu-vps/?utm_source=mastodon&utm_medium=social&utm_campaign=ReviveOldPost #selfhosted #mailrelay #mailserver #selfhosting
RadWeb, LLC · Deploy A Self-Hosted SMTP Relay With Mailcow On Ubuntu VPS (10 Minute Quick-Start Guide) - VPS Hosting Blog | Dedicated Servers | Reseller HostingThis article provides a guide to deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS.When you deploy a self-hosted SMTP relay with Mailcow on Ubuntu
Exchange Shell - Get all shared mailboxes with primary SMTP | https://techygeekshome.info/exchange-shell-get-all-shared-mailboxes-with-primary-smtp/?fsp_sid=18357 | #Exchange #Guide #Microsoft #Powershell #SMTP
https://techygeekshome.info/exchange-shell-get-all-shared-mailboxes-with-primary-smtp/?fsp_sid=18357
Exchange Shell - Get all shared mailboxes with primary SMTP | https://techygeekshome.info/exchange-shell-get-all-shared-mailboxes-with-primary-smtp/?fsp_sid=18356 | #Exchange #Guide #Microsoft #Powershell #SMTP
https://techygeekshome.info/exchange-shell-get-all-shared-mailboxes-with-primary-smtp/?fsp_sid=18356
I know what #SMTP stands for since a loong time. However, for some reason I always hesitate between STMP and SMTP when writing/saying it out loud. Like, I have to say the whole name in my head to know which one is the correct one...
please tell me I'm not the only one 
Deploy a Self-Hosted #SMTP Relay with #Mailcow on #Ubuntu #VPS (10 Minute Quick-Start Guide) This article provides a guide to deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS.
When you deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS, you can manage email delivery securely and efficiently. This guide walks you through installing and configuring Mailcow for SMTP relaying.
What is an ...
Continued https://blog.radwebhosting.com/deploy-a-self-hosted-smtp-relay-with-mailcow-on-ubuntu-vps/?utm_source=mastodon&utm_medium=social&utm_campaign=ReviveOldPost #selfhosting #mailserver #selfhosted #mailrelay
RadWeb, LLC · Deploy A Self-Hosted SMTP Relay With Mailcow On Ubuntu VPS (10 Minute Quick-Start Guide) - VPS Hosting Blog | Dedicated Servers | Reseller HostingThis article provides a guide to deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS.When you deploy a self-hosted SMTP relay with Mailcow on Ubuntu
Neue Anleitung auf meinen IT-Blog!
So richtest du SMTP-Benachrichtigungen in CheckMK über Mailjet mit Postfix als Relay ein. Schritt für Schritt erklärt – inklusive Konfig-Dateien, Tipps zum Testen und Troubleshooting.
- Perfekt für Admins, die ihre Monitoring-Benachrichtigungen zuverlässig per Mail versenden wollen.
CheckMK + Mailjet + Postfix = 
Jetzt lesen: https://www.marcogriep.de/posts/checkmk-mailversand-uber-mailjet-realisieren/
Griep Marco - IT-Beratung, Softwareentwicklung & IT-TrainingsCheckMK Benachrichtigungen über Mailjet konfigurierenRichte den Mailversand in CheckMK über Mailjet und Postfix ein. Schritt-für-Schritt-Anleitung für zuverlässige SMTP-Benachrichtigungen.
Continued thread
System Administration
Week 8, HTTPS & TLS
After discussing HTTP in the previous week and seeing how we used STARTTLS in the context of #SMTP, we are now quickly reviewing HTTPS, TLS, and the WebPKI. While we don't have a video segment for this, here are slides, including this handy diagram illustrating the CSR process:
With Mozilla launching Thundermail as a mail provider and knowing the intend to use Stalwart as server implementation, I really hope we start seeing more wide adoption of JMAP. SMTP, IMAP, CalDAV and CardDAV ara really showing its age and limitations.
Sources:
Mozilla: https://thunderbird.topicbox.com/groups/planning/T437cd854afcb1395
JMAP: https://jmap.io/
thunderbird.topicbox.comTopicbox
MailChannels Acquires SMTP Protocol from IETF for $50 Million
https://www.linkedin.com/pulse/mailchannels-acquires-smtp-protocol-from-ietf-50-million-hbasc/
www.linkedin.comMailChannels Acquires SMTP Protocol from IETF for $50 MillionVancouver, BC — April 1, 2025 — In a shocking move that has rocked the email world, MailChannels announced today that it has acquired the Simple Mail Transfer Protocol (SMTP) from the Internet Engineering Task Force (IETF) for a cool $50 million. The acquisition grants MailChannels exclusive ownersh
Continued thread
System Administration
Week 8, The Simple Mail Transfer Protocol
Shared by a student of mine: Email vs Capitalism, or, Why We Can't Have Nice Things, a talk given by Dylan Beattie at NDC Oslo 2023. Covers a lot of our materials and adds some additional context.
Continued thread
System Administration
Week 8, The Simple Mail Transfer Protocol, Part III
In this video, we look at ways to combat Spam. In the process, we learn about email headers, the Sender Policy Framework (#SPF), DomainKeys Identified Mail (#DKIM), and Domain-based Message Authentication, Reporting and Conformance (#DMARC). #SMTP doesn't seem quite so simple any more...
Continued thread
System Administration
Week 8, The Simple Mail Transfer Protocol, Part II
In this video, we observe the incoming mail on our MTA, look at how STARTTLS can help protect information in transit, how MTA-STS can help defeat a MitM performing a STARTTLS-stripping attack, and how DANE can be used to verify the authenticity of the mail server's certificate.
Didn't one of y'all write an ebook on hosting your own mail server? Or have a blog series about it or something? #hostyourown #smtp
Back in the dim and distant times, when people who attached devices to the internet had some sort of a clue, if you were going to send email by #SMTP, it was vitally important for the sending network interface to have a matching reverse and forward DNS, since that was a very basic spam filter. At least you had some clue whose machines were sending the message, even if the message itself was junk.
Nowadays, it seems that even big 'cloud' systems like #microsoft365 don't have reverse DNS. #email
My day started with welcoming agmKHzyPT1wK_sLBlBs0KzXZt_18274@skapet.bsdly.net to the imaginary friends population at https://nxdomain.no/~peter/traplist.shtml, this one generated by whatever runs the service check@taknc.com, hosted in AS134963 (Alibaba) address space.
How is your day going?
nxdomain.nobsdly.net - A traplist collected by Peter Hansteen