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How I lost a client because I picked the wrong ASN

General Discussion by MARIA3 21 replies 995 views
#11
guru36 said:
UCEPROTECT lists the whole ASN

Yes. The entire /19. My ticket to them got auto-closed with a link to their "delisting fee" page. Leaseweb says they are "working with UCEPROTECT" but no timeline. Meanwhile my client's transactional mail is landing in spam.

This is why I run 6 free-tier instances and a prayer. At least when prayer fails I am only out time, not EUR 200/month.

licensing is a suggestion
#12
olya said:
Query RIR delegation dates (fresh /24s are suspicious)

Which RIR though? ARIN fresh is different from RIPE fresh. In JP we see a lot of APNIC /24s that are six months old and already burned. RIR does not equal reputation.

#13
olya said:
Test mail delivery to gmail, outlook, yahoo

I did not do this. I only check ping and speedtest. Now I know better. Client already moved to another admin. Regards.

siesta first, deploy later
#14
MARIA3 said:
Client already moved to another admin.

Ouch. That's the real cost right there. YMMV but I have started building a 48-hour burn-in into every new IP. Mail test, blocklist check, then light traffic. Caught a bad range from CloudCone last year before it went to production.

...
#15
olya said:
Got listed on UCEPROTECT yesterday. The whole ASN, /19.

Madrid here too. I have a rack with Leaseweb Amsterdam and their IP reputation was the selling point. Now I am worried. Is this affecting mail delivery from Amsterdam as well or just the /19?

swimming upstream since 2019 🐟
4 #16
ana_mad said:
Is this affecting mail delivery from Amsterdam as well or just the /19?

Just the /19 so far. But UCEPROTECT lists at ASN level, so any IP in that ASN gets a weight penalty in some filters. My Frankfurt colo is on a different ASN, clean for now. Fingers crossed.

licensing is a suggestion
#17

UCEPROTECT is based in DE. Their business model is listing and charging. This is not reputation, it is ransom. I do not use them for any decision. German mail providers mostly ignore them now.

Better to check Sender Score or Google Postmaster. Real data, no extortion.

Neuland. Aber schnell.
4 #18
Fritz48 said:
German mail providers mostly ignore them now.

Tell that to my monitoring. 14 status pages, remember? I track delivery rates by provider. T-Online and GMX still weight UCEPROTECT in their filters. Not as hard as 2021, but it is there. "Mostly ignore" is not "ignore."

436 days. reboot is surrender.
7 #19
Fritz48 said:
UCEPROTECT is based in DE. Their business model is listing and charging.

This. I run mail for a small collective in Prague. We got listed because one user forwarded a newsletter. UCEPROTECT wanted EUR 250. We switched outbound to Mailgun instead. Problem solved, cheaper than ransom.

Mailgun, Postmark, Amazon SES. Pick one. IP reputation is their problem now.

oops: 0000 [#1] SMP
#20
prague1983 said:
Mailgun, Postmark, Amazon SES. Pick one.

12ms to Frankfurt, 180ms to everywhere I actually need. Including API calls to US-east for Mailgun. Latency matters for transactional. Self-hosted in Stockholm with clean IP is faster than round-trip to Virginia.

Not always possible, I know. But "just use a service" has its own tax.

1ms or I don't want it

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