If anyone out there runs a #Plesk server, check to see if your have a ton of emails stuck in your mail queue. There was a problematic email security update that got applied within the past 12 hours that caused mail queues to stop processing both incoming and outgoing email.

Fortunately, it's an easy fix.

https://support.plesk.com/hc/en-us/articles/30609832237591-Unable-to-receive-email-with-Plesk-Email-Security-extension-installed-connect-to-sql-unable-to-connect-to-DSN-DBI-mysql-database-emailsecurity-mysql-socket-var-run-mysqld-mysqld-sock

So, last night I finally took the last step and switchted my DNS entries to my own self hosted mail server (@mwl your book was really helpful - great work!)

But now I am back to my previous problem - which mail client to use on iOS and macOS - any suggestions fediverse? (boosts are quiet welcome)
#selfhosted #email #mailserver #ios #macos

Die Mailadresse aus meiner Domain, von der aus ich meinen #MDB im Herbst angeschrieben habe, wird vom Bundestags-#Mailserver direkt als SPAM geblockt.

Die selbe Mail von Googlemail aus verschickt scheint akzeptiert zu werden.

Grmpfl - bin ich auf irgendeiner #Spamliste gelandet? Oder betreibt der BT-Mailserver overblocking?

Well, this may be a first for me... I just received, on October 17, a bounce for an email message which my system sent on August 19.
It was an automated DMARC aggregate report email, and therefore there's a good chance the system it was sent to belongs to a spammer and therefore weird behavior from it would not be surprising, but still, bouncing a message after two months is pretty darn weird.
#smtp #sysadmin #mailHosting #mailServer #DMARC

Do you run your own mailserver, for exchanging email with other people's mailservers?

(Yes, I know that those likely to see this are not representative of the general population. That's fine!)

It turns out that once you've gone through the effort of setting up a #Postfix mail server, it's Really Easy™ to add #DKIM signing to it with #opendkim.
It's also Really Necessary™ because if your server ever needs to email someone on a Gmail or Yahoo managed domain, the message may not get through if it isn't DKIM-signed. (Ask me how I know.)
#sysadmin #mailServer #SMTP

Hello #MailServer maintainers! If you are using rbl.realtimeblacklist.com, you should be aware that as of around 4am US/Eastern this morning their domain has been parked and is returning bogus #DNSBL results. I suspect that the registration lapsed and a domain resale stalker snapped it up, though I can't say for certain. Perhaps it's a temporary blip that will be resolved, but you should stop using it in the meantime.
#SysAdmin #SMTP #EmailAdmin

I've recently learned empirically that apparently #DNSBL responses that start with "127.255" indicate problems with the query or the DNSBL service rather than an actual listing for the queried host, but I can't find this actually _documented_ anywhere.
My best guess is that #Spamhaus did this first and others copied it.
Can anyone confirm that or, if it's wrong, point to a reference I've missed to online documentation of this?
#SMTP #SysAdmin #MailServer

http://kck.st/3WN5vGc

"Backers get 5 Unix books. FIVE!"

Yet.

There is still 6 days to go to get 6 instead of 5. We're close enough!

#PSA for those of you who maintain your own #MailServer and use #Spamhaus as a #DNSBL to block spam.
Your server needs to be using a caching nameserver running locally or using Spamhaus DQS, rather than making Spamhaus DNS queries through a shared nameserver.
This has supposedly been true since 2021 but I just found out about it today so perhaps you are also unaware.
See https://www.spamhaus.com/resource-center/successfully-accessing-spamhauss-free-block-lists-using-a-public-dns/ .
#sysadmin #SMTP #spam

Microsoft ist ein Risiko für die nationale Sicherheit
https://tarnkappe.info/artikel/it-sicherheit/ehemaliger-direktor-im-weissen-haus-microsoft-ist-eine-bedrohung-fuer-die-nationale-sicherheit-292479.html #Microsoft #Mailserver #MicrosoftExchange

Okay, so with my #mailserver and my #nextcloud instance running very well in #microk8s I am now ready for the final (and probably most demanding) task: #migrate my old homepage / website / blog / <whatever you kids call static web pages these days>

Up until now I used #wordpress and no, this is not what I want anymore.

I had a look at #hugo and #wondercms and both look quite interesting. So I turn to you, dear #fediverse and ask what you'd recommend to me?

#justaskfedi
#simple
#blog
#software
#selfhosting
#k8s

Oh, tomorrow is #SmallBusinessSaturday.

Did I forget to mention that I'm a small business.

I run a managed IT service for content creators, focusing mostly on PoC.

Lately, I've been running hosting for a few small companies.

Keep in mind that not only am I hosting my own #Mastodon instance, but I run my own #MailServer, I've deployed #Forums, and do few other projects and am open to others.

hmm the #maddy #mailserver looks interesting....

"It replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC and more with one daemon with uniform configuration and minimal maintenance cost."

https://github.com/foxcpp/maddy