Business mail platform · All-Inkl
Verifying addresses at All-Inkl domains
Can you verify addresses at domains behind All-Inkl?
Depends on the domainIt depends on the company. Domains behind All-Inkl are probed like any other.
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All-Inkl answers for the company's own mail rules, so the checker treats every domain on its own: it offers a random address first, and if that is accepted the domain is catch-all and results come back risky ("Accepts all addresses"). Otherwise your address gets a per-mailbox answer. It always checks the syntax, the domain's MX records, disposable domains and role addresses such as info@ first.
Mailbox existsMailbox not foundAccepts all addressesCompany domains whose MX records point at kasserver.com are hosted at All-Inkl. All-Inkl documents a catch-all option, and where an admin turns it on every address at the domain looks deliverable. Our checker probes each domain on its own: it offers a random address that can't exist first, and a domain that accepts it comes back risky as catch-all; otherwise your address gets a per-mailbox answer.
Live DNS snapshot: kasserver.com
Checked 26 October 2026, 06:26 UTCkasserver.com is an MX host suffix, not a mail domain, so this is kasserver.com: a domain whose mail runs through All-Inkl. Read from DNS at the time shown and refreshed at most once a day.
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mx.kasserver.com
v=spf1 a mx ip4:85.13.128.0/18 ip4:185.3.40.0/22 ip6:2a02:2d40::/32 ~all_dmarc.kasserver.com has more than one DMARC record, which receivers treat as none.
v=DMARC1; p=none; rua=mailto:dmarc-report@kasserver.com; ruf=mailto:postmaster@kasserver.com
v=DMARC1; p=none; rua=mailto:postmaster@kasserver.com; ruf=mailto:postmaster@kasserver.comLook up any other domain with the MX lookup or the email provider lookup.
All-Inkl at a glance
| Operated by | ALL-INKL.COM - Neue Medien Münnich, Hauptstraße 68, D-02742 Friedersdorf, GermanySource: ALL-INKL.COM legal notice |
|---|---|
| MX hosts | The default MX points to <your-login>.kasserver.com, one host per KAS loginSource: ALL-INKL.COM tutorial: change the MX record |
| Address rule | Leave the email address field blank in KAS to create a catch-all account that receives mail for addresses that do not exist in the KAS panel; ALL-INKL advises against it because of spamSource: ALL-INKL.COM tutorial: create an email account |
ALL-INKL domains can be catch-all with a blank address field
ALL-INKL documents a default MX record that points to `<your-login>.kasserver.com`, so the host name differs per customer login. Only the kasserver.com suffix is shared.
KAS can create a catch-all account by leaving the address blank, which receives mail sent to addresses that do not explicitly exist. ALL-INKL advises against it. Where it is on, a single-address check cannot confirm a person.
What our checker does behind All-Inkl
SimpleVerifier doesn't skip or special-case All-Inkl. For each company domain it offers a random address that can't exist, then your address, and disconnects without sending. If the random address is accepted, the domain is catch-all and its results come back risky with "Accepts all addresses". If it is rejected, your address gets a real answer for that mailbox.
Consumer mailboxes are a separate case; see the Gmail and Yahoo pages. Domains behind All-Inkl are treated like any company domain.
Cleaning a list full of All-Inkl domains
Split the list by domain, not by platform. Two companies on All-Inkl can behave in opposite ways, so a catch-all result at one says nothing about the next. The bulk catch-all checker finds which domains in a list accept everything before you spend time on single addresses.
For catch-all domains, keep addresses with recent replies or sign-ups and send the rest in a small first batch, suppressing anything that hard-bounces. For per-mailbox domains, trust the verdict: invalid addresses will bounce, and valid ones were accepted by the company's own directory. Accept-all vs unknown results covers the difference.
Common questions
- Can you verify addresses at domains behind All-Inkl?
- It depends on the company. Domains behind All-Inkl are probed like any other. All-Inkl answers for the company's own mail rules, so the checker treats every domain on its own: it offers a random address first, and if that is accepted the domain is catch-all and results come back risky ("Accepts all addresses"). Otherwise your address gets a per-mailbox answer. It always checks the syntax, the domain's MX records, disposable domains and role addresses such as info@ first.
- How do I know if a company uses All-Inkl?
- Look up the domain's MX records. A first MX host ending in kasserver.com means mail goes through All-Inkl. The email provider lookup and MX lookup tools show it for any domain.
- Are domains behind All-Inkl catch-all?
- Some are and some aren't; it depends on how each company configured All-Inkl. A verifier can tell by offering a random address that can't exist: if the domain accepts it, the domain is catch-all and single addresses there can't be confirmed.
- What is kasserver.com in an MX record?
- It is the ALL-INKL.COM mail host. ALL-INKL says the default MX record points to your-login.kasserver.com.
Related tools
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