Hey @guinan - Just signed up on tenforward.social as I am planning to migrate over, however the confirmation email doesn't seem to be arriving... I don't seen any delivery attempts in my mail server logs either.
Some delays expected here? (It's been 30 minutes)
it appears your mail server is broken see following:
relay=mx01.mail.routh.io[172.105.2.183]:25, delay=391, delays=389/0/2.3/0, dsn=4.7.8, status=deferred (SASL authentication failed; server mx01.mail.routh.io[172.105.2.183] said: 535 5.7.8 Error: authentication failed: )
my mail server shouldn't be trying to SASL auth
(sorry for the late reply, I have mastodon.social silenced so I didn't see your mention until I manually looked up your profile)
Looking at that message I have a feeling this Haiku is about to become very relevant.
@guinan no that message is frequently sent to remote servers when the reverse DNS lookups on my mailserver have exhausted DNS hits for the hour. Happens when spammers hit the server at times. I have a cache layer I'm prepared to deploy on my kube cluster for this, however Linode's LKE has a timed job that forcibly overwrites the CoreDNS config on their clusters, so until they remedy this implementation there's no way for me to deploy my cache.
As I "fix" I had disabled reverse lookups...
@Routhinator yep
the mail server IP is 96.126.113.89, RDNS is deirdre.asininetech.net
@guinan Very strange. I cannot find record of your server in my logs. I do see SASL failures with no password attempt, but I can't make sense of it. It seems like the remote is attempting a relay. I've bounced all nodes and tried several tests, and had a few people send me emails, and all came through. Genuinely confused about whats going.
Can you resend and this time send the reject along with a timestamp+timezone so I can correlate log lines?
@Routhinator resent
Apr 29 21:49:42
relay=mx01.mail.routh.io[172.105.2.183]:25, delay=3487, delays=3479/0.01/8.5/0, dsn=4.7.8, status=deferred (SASL authentication failed; server mx01.mail.routh.io[172.105.2.183] said: 535 5.7.8 Error: authentication failed: )
my server's timezone is UTC, no offsets
Interesting.. my server definitely seems to think yours is attempting SASL auth with no auth.. couldn't verify earlier because of proxy IPs masking the attempt.
Apr 29 21:49:42 mx01 postfix/smtpd[122]: warning: unknown[10.2.0.1]: SASL PLAIN authentication failed:
Apr 29 21:49:42 mx01 postfix/smtpd[122]: disconnect from unknown[10.2.0.1] ehlo=2 starttls=1 auth=0/1 quit=1 commands=4/5
Digging to try and see why.
@Routhinator I figured it out.
smtp_sasl_auth_enable = yes
this was set in my /etc/postfix/main.cf
but the interesting thing is that, this doesn't cause an issue for other mail servers (gmail.com, fastmail.com, yahoo.com etc.) so I'm guessing the issue here is that your mail server is offering SASL auth on port 25, which causes my server to try it.
You should have your confirmation mails now.
Chris Routh 🐰🕳️
Guinan