Egregoros · Phoenix Framework

Context

Hypermart CEO is always watching you

@yonle@fedinet.waltuh.cyou remote

or start self hosting today

RE: https://mas.to/@alternativeto/116170689373236412

kaia

@kaia@brot.eus remote

@yonle I was told nobody should self host mail

Phantasm (alt)

@phnt@pl.borked.technology remote

@kaia @yonle For business and personal email that needs to have actually working deliverability, self hosting can be a pain.

Hypermart CEO is always watching you

@yonle@fedinet.waltuh.cyou remote

@phnt @kaia first rule when hosting a small or mid scale of email server: use opensmtpd. postfix if you're an absolute masochist

and apparently you guys are going the masochist route.

Hypermart CEO is always watching you

@yonle@fedinet.waltuh.cyou remote

@phnt @kaia and so i use opensmtpd. it works, even though there's something a bit annoying (like mail delivery a bit slow due to no route. network dependant maybe)

Phantasm (alt)

@phnt@pl.borked.technology remote

@yonle @kaia Postfix/Dovecot is the easy part, you can even cheat with things like Mailcow and the new-ish all-in-one email solutions written in Go. It's the deliverability that is annoying to maintain. Are you in a bad IP space or inherited an IP that was used by a spammer, good luck getting that reputation back in a reasonable time. Have fun getting deliveries fully working to Gmail/O365 and not get dropped into spam at seemingly random times.

🦾ChatGPT hyphen🤖

@m0xEE@breloma.m0xee.net remote

@phnt @kaia @yonle
There's also this Stalwart all-in-one thing in Rust — never used it myself, but I've heard good things.

Hypermart CEO is always watching you

@yonle@fedinet.waltuh.cyou remote

@m0xEE @kaia @phnt will need to wait for 2-3 years of actual usage before it’s actually deemed production ready, as botnets are literally trying whatever they could to log into my smtp, even screaming via AUTH LOGIN on my smtpd.

still interesting though. i wanna check it out later.

Hypermart CEO is always watching you

@yonle@fedinet.waltuh.cyou remote

@m0xEE @kaia @phnt like, no joke bud

some bot literally went “AUTH LOG ‘NRRRRAAAAAAAAAAAA’” LMFAOOOOO AND MY LOG CAUGHT IT

Phantasm (alt)

@phnt@pl.borked.technology remote

@yonle @m0xEE @kaia I average two failed login attempts per second. Both on Postfix and Dovecot. Similar to what SSH receives.

Replying to @phnt@pl.borked.technology

Hypermart CEO is always watching you

@yonle@fedinet.waltuh.cyou remote

@phnt @m0xEE @kaia since most traffic is hitting on port 25, i just make opensmtpd to literally reject any connections with invalid rdns and forward rdns.

it’s really effective:

Mar 03 19:10:08 waltuh.cyou smtpd[1796806]: d5373ff3bc5172bf smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:10:08 waltuh.cyou smtpd[1796806]: d5373ff3bc5172bf smtp disconnected reason=disconnect
Mar 03 19:17:16 waltuh.cyou smtpd[1796806]: d5373ff4305b9e00 smtp connected address=80.94.95.216 host=<unknown>
Mar 03 19:17:16 waltuh.cyou smtpd[1796806]: d5373ff4305b9e00 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:17:16 waltuh.cyou smtpd[1796806]: d5373ff4305b9e00 smtp disconnected reason=disconnect
Mar 03 19:17:16 waltuh.cyou smtpd[1796806]: d5373ff576769952 smtp connected address=80.94.95.216 host=<unknown>
Mar 03 19:17:16 waltuh.cyou smtpd[1796806]: d5373ff576769952 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:17:16 waltuh.cyou smtpd[1796806]: d5373ff576769952 smtp disconnected reason=disconnect
Mar 03 19:21:05 waltuh.cyou smtpd[1796806]: d5373ff6114035bf smtp connected address=45.144.212.169 host=<unknown>
Mar 03 19:21:05 waltuh.cyou smtpd[1796806]: d5373ff6114035bf smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:21:05 waltuh.cyou smtpd[1796806]: d5373ff6114035bf smtp disconnected reason=disconnect
Mar 03 19:22:29 waltuh.cyou smtpd[1796806]: d5373ff742640107 smtp connected address=64.89.160.82 host=<unknown>
Mar 03 19:22:29 waltuh.cyou smtpd[1796806]: d5373ff742640107 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:22:29 waltuh.cyou smtpd[1796806]: d5373ff742640107 smtp disconnected reason=disconnect
Mar 03 19:28:04 waltuh.cyou smtpd[1796806]: d5373ff863e52ae4 smtp connected address=91.92.240.153 host=<unknown>
Mar 03 19:28:04 waltuh.cyou smtpd[1796806]: d5373ff863e52ae4 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:28:04 waltuh.cyou smtpd[1796806]: d5373ff863e52ae4 smtp disconnected reason=disconnect
Mar 03 19:33:07 waltuh.cyou smtpd[1796806]: d5373ff9c18c9429 smtp connected address=143.244.152.105 host=portscanner-nyc1-02.prod.cyberresilience.io
Mar 03 19:33:07 waltuh.cyou smtpd[1796806]: d5373ff9c18c9429 smtp failed-command command="EHLO" result="501 5.5.1 Invalid command: EHLO requires domain name"
Mar 03 19:33:08 waltuh.cyou smtpd[1796806]: d5373ff9c18c9429 smtp disconnected reason="io-error: Connection reset by peer"
Mar 03 19:45:54 waltuh.cyou smtpd[1796806]: d5373ffa41f5cd25 smtp connected address=91.92.240.153 host=<unknown>
Mar 03 19:45:54 waltuh.cyou smtpd[1796806]: d5373ffa41f5cd25 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 19:45:54 waltuh.cyou smtpd[1796806]: d5373ffa41f5cd25 smtp disconnected reason=disconnect
Mar 03 2006 waltuh.cyou smtpd[1796806]: d5373ffbef9e6af4 smtp connected address=45.144.212.169 host=<unknown>
Mar 03 2006 waltuh.cyou smtpd[1796806]: d5373ffbef9e6af4 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 2006 waltuh.cyou smtpd[1796806]: d5373ffbef9e6af4 smtp disconnected reason=disconnect
Mar 03 20:03:30 waltuh.cyou smtpd[1796806]: d5373ffcf1182cf8 smtp connected address=91.92.240.153 host=<unknown>
Mar 03 20:03:30 waltuh.cyou smtpd[1796806]: d5373ffcf1182cf8 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 20:03:31 waltuh.cyou smtpd[1796806]: d5373ffcf1182cf8 smtp disconnected reason=disconnect
Mar 03 20:16:21 waltuh.cyou smtpd[1796806]: d5373ffd4eafbef6 smtp connected address=80.94.95.216 host=<unknown>
Mar 03 20:16:21 waltuh.cyou smtpd[1796806]: d5373ffd4eafbef6 smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 20:16:21 waltuh.cyou smtpd[1796806]: d5373ffd4eafbef6 smtp disconnected reason=disconnect
Mar 03 20:16:21 waltuh.cyou smtpd[1796806]: d5373ffe2dd03ccb smtp connected address=80.94.95.216 host=<unknown>
Mar 03 20:16:21 waltuh.cyou smtpd[1796806]: d5373ffe2dd03ccb smtp failed-command command="" result="550 5.7.1 Reverse DNS Lookup Failed."
Mar 03 20:16:21 waltuh.cyou smtpd[1796806]: d5373ffe2dd03ccb smtp disconnected reason=disconnect

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