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Old 31 Oct 2024, 07:33 AM   #1
jeffpan
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Please fix up your SPF record

I saw the new IP 103.168.172.197 was added as sender server.
But it's not included in Fastmail's official SPF record.
Please fix up it. Thanks.
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Old 31 Oct 2024, 08:15 AM   #2
n5bb
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This forum is not guaranteed to be monitored by Fastmail staff. You need to report this directly to Fastmail.
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Old 31 Oct 2024, 08:55 AM   #3
chrisjj
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Quote:
Originally Posted by jeffpan View Post
it's not included in Fastmail's official SPF record.
Goodness. That's an appalling blunder.
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Old 31 Oct 2024, 09:17 AM   #4
n5bb
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The IP 103.168.172.197 is assigned to fastmailteam.com, which is used by Fastmail staff (and perhaps other uses). The SPF record for fastmailteam.com includes spf.messagingengine.com, which I believe includes the IP range of 103.168.172.197. So I don’t see any problem.

Bill
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Old 31 Oct 2024, 09:31 AM   #5
Bamb0
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Quote:
Originally Posted by jeffpan
I saw the new IP 103.168.172.197 was added as sender server.
But it's not included in Fastmail's official SPF record.
Maybe they forgot buddy,Im sure they will get round to it
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Old 31 Oct 2024, 01:37 PM   #6
jeffpan
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Quote:
Originally Posted by n5bb View Post
The IP 103.168.172.197 is assigned to fastmailteam.com, which is used by Fastmail staff (and perhaps other uses). The SPF record for fastmailteam.com includes spf.messagingengine.com, which I believe includes the IP range of 103.168.172.197. So I don?t see any problem.

Bill
Really? currently fastmail has such IP addresses for their SPF:

Quote:
spf.messagingengine.com. 86400 IN TXT "v=spf1 ip4:103.168.172.128/27 ip4:202.12.124.128/27 -all"
Certainly 103.168.172.197 is not included in their SPF ip space.
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Old 31 Oct 2024, 08:30 PM   #7
jeffpan
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And another sender IP was found 202.12.124.196
which is also missed from their official SPF.
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Old 31 Oct 2024, 11:15 PM   #8
SideshowBob
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Check spfall.messagingengine.com. This is not a mistake, it's deliberate policy.

See

https://www.emaildiscussions.com/showthread.php?t=76295

Last edited by SideshowBob : 1 Nov 2024 at 12:00 AM.
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Old 1 Nov 2024, 06:25 AM   #9
n5bb
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Sorry - you are correct that the *.*.*.128/27 address range does not include *.*.*.196.

What was the actual FROM sending domain name? That?s the domain whose SPF record must be checked. Since you are complaining about a Fastmail SPF record, I assume that the emails in question were sent with envelope-FROM at a Fastmail-owned domain or a private domain hosted at Fastmail. I just sent a test message with FROM at my Fastmail-hosted private domain and it passed SPF with a sender IP address of 103.168.172.159, which is within the 103.168.172.128/27 CIDR range.

Bill
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Old 1 Nov 2024, 07:35 AM   #10
jeffpan
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Quote:
Originally Posted by SideshowBob View Post
Check spfall.messagingengine.com. This is not a mistake, it's deliberate policy.

See

https://www.emaildiscussions.com/showthread.php?t=76295
That's nice knowledge. This matches my case.

I have a domain which is not hosted on fastmail, but uses fastmail as auth-smtp server. When messages sent with this domain from fastmail smtp server, they fall into spfall SPF space.

I have tested that if I use the regular fastmail domains to send email from webmail, they fall into the normal spf.messagingengine.com space.

I am so confused FM takes this policy for their auth-smtp servers including the one used by Pobox.
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Old 2 Nov 2024, 01:05 AM   #11
SideshowBob
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Originally Posted by jeffpan View Post
I am so confused FM takes this policy for their auth-smtp servers including the one used by Pobox.
Did you create a matching entry under "My email addresses" at Fastmail, and/or somewhere at Pobox (I'm assuming the domain was hosted at Pobox)? I did see this happen even with an @username.sent.com address because there was no webmail identity for the subdomain.
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Old 2 Nov 2024, 06:55 AM   #12
jeffpan
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Quote:
Originally Posted by SideshowBob View Post
Did you create a matching entry under "My email addresses" at Fastmail, and/or somewhere at Pobox (I'm assuming the domain was hosted at Pobox)? I did see this happen even with an @username.sent.com address because there was no webmail identity for the subdomain.
My domain was not hosted on fastmail/pobox. But used FM/Pobox as the auth-smtp server for sending email. Some of friends on this forum are using the domain email as their private email. There was no problem in the past time. But recently FM upgraded their architecture, the mails were sent from unlisted-SPF IPs which caused the receive provider such as gmail think they were spams.
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Old 2 Nov 2024, 11:24 PM   #13
SideshowBob
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Quote:
Originally Posted by jeffpan View Post
My domain was not hosted on fastmail/pobox. But used FM/Pobox as the auth-smtp server for sending email. Some of friends on this forum are using the domain email as their private email. There was no problem in the past time. But recently FM upgraded their architecture, the mails were sent from unlisted-SPF IPs which caused the receive provider such as gmail think they were spams.
It will be a gmail change; the thread I started when I first noticed this is from over 4 years ago.

If the domain isn't hosted at fastmail, you can't fix it by setting an identity, you will need to use spfall, or equivalent.
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