Collect Headers or Bounce Text
Keep the authentication results, sending IP, message ID, recipient provider and timestamp. Remove personal message content before sharing diagnostic evidence.
Invoices landing in spam, order confirmations bouncing, quotations to an overseas buyer that never arrive. We work through SPF, DKIM and DMARC alignment, real SMTP evidence, sending routes, blocklist signals and mail-server settings until the cause is clear.
Send the sending and receiving domains, roughly when it happened and in which timezone, what kind of message it was, the bounce text or headers with personal lines removed, the provider names, and any recent DNS or mail-platform change. Please keep mailbox passwords out of that description.
SPF, DKIM and DMARC checkers describe published records; they do not show every relay, forwarding step or recipient decision. Headers and SMTP responses connect the records to an actual message.
Keep the authentication results, sending IP, message ID, recipient provider and timestamp. Remove personal message content before sharing diagnostic evidence.
Website forms, business mailboxes, helpdesks, newsletters and invoicing tools may all send for one domain. A policy must account for each authorised path.
Authentication alignment can be repaired, but no provider can guarantee inbox placement. Volume, complaints, content and sending history also influence filtering.
Email passes through applications, SMTP authentication, DNS, sending servers, relays, the recipient's provider, any forwarding, and finally a filter. We follow one genuine message through that chain rather than judging everything from a single online tool.
The sender, recipient, time, Message-ID, headers, bounce text and provider logs let us line the same message up across every system it touched.
The website, staff mailboxes, a CRM, a helpdesk, the billing system and any marketing platform may each need their own authentication path.
Existing SPF includes, DKIM selectors, DMARC policy, MX records, verification tokens and forwarding dependencies get inventoried before a single record changes.
Passing SPF, DKIM and DMARC matters, but content, sending history, complaints, volume and the recipient's own policy still influence filtering.
Where it is relevant we check outbound delivery, inbound routing, replies, forwarding, application notifications and provider feedback as separate things.
The first job is knowing whether the message failed before it was ever submitted, during transport, at DNS authentication, or after the recipient's provider had already accepted it.
Build or repair an authentication setup that honestly reflects the services allowed to send for your domain.
Follow submission, queues, relays, encryption, authentication and remote responses on hosted or self-managed mail.
Sort out inbound, outbound, forwarding and split-delivery problems that come from records or route selection.
Repair the notifications your applications fire after a form, an order, a ticket, a signup or a password reset.
Authorised senders, authentication alignment, mail routes, hostname and reverse-DNS dependencies, the evidence behind failures and a practical order of fixes can all be documented — without pretending anyone controls a recipient's filtering algorithm.
The submission, the authentication result, the route it took, the remote server's answer and the final outcome get lined up first. Then only the failing layer changes, and the test runs again.
Which mail, to which providers, and whether it bounces or quietly lands in spam. A complete bounce message or a set of headers helps most — diagnosing the email delivery problem is our side of the work.
We settle which sending sources are involved — server mail, WordPress, WHMCS, a transactional API — and what DNS and mail access is needed to inspect them properly.
We read the headers, check SPF, DKIM and DMARC alignment for each source, look at MX, PTR and TLS, then find the actual rejection reason in the mail log.
You get the cause — a missing DKIM key, an SPF lookup limit, a DMARC policy conflict, absent rDNS, a listed IP — with the record changes, how long propagation takes, and a quote where one applies.
After approval we publish the records, send test mail again to the providers that were failing, and confirm authentication passes in the headers. Inbox placement itself is something nobody can guarantee.
Clear approval boundary. Investigation and repair are separated where applicable. Broader changes, added scope, and material risk are explained before you authorise the work.
Start a scoped requestStaff email kept working perfectly, while the store's notifications drifted further and further into spam or failed authentication outright.
spffail: sender not authorised
dkimpass: third-party signing domain
dmarcfail: alignment
sourceecommerce notification service
repairauthorise source; align DKIM
verifySPF=pass DKIM=pass DMARC=pass
Take focused troubleshooting for one message path that is failing, or ask for a structured review of your senders, DNS authentication, routes and application notifications.
For one bounce, one missing message, an SMTP error, a DNS failure, a routing problem or an application notification.
Best forFor organisations sending from several places that need one clear map and a prioritised plan.
Best forDeliverability is DNS, server configuration, routing, reputation and message behaviour all at once. We join those layers together through one real message, instead of treating a single DNS checker's verdict as the whole story.
Receiving providers make their own filtering decisions. Fixing authentication and routing improves technical correctness, but Hostaccent cannot guarantee inbox placement, reputation recovery, blocklist removal, or acceptance by every provider.
A delivery failure rarely lives in one record: where a message lands depends on SPF alignment, DKIM signing, DMARC policy, reverse DNS, the sending IP's reputation, and the content itself. Explore every specialist service without losing the wider production context.
These answers explain how the investigation works before you share access or approve a production change.
Ask about your environmentUsually missing or wrong SPF, DKIM and DMARC records, or a shared server IP with a poor reputation. Gmail is strict about authentication regardless of where the sender is. We check all three records, the sending IP's reputation, and the message itself, then fix what is actually failing.
Yes. Bangladeshi senders sometimes hit regional reputation filters when emailing clients abroad. We check blacklists, verify authentication, and where necessary recommend a dedicated sending service for transactional mail so your business email is not affected.
No. This is a paid service and your mail can be sent from anywhere — another host's mail server, Google Workspace or Microsoft 365, a transactional API, or your own server. We work with the DNS and sending sources you already have. Inbox placement itself is never guaranteed by any provider.
Yes. We list the senders that are genuinely yours, read the DNS you have now, validate the syntax and lookup behaviour, confirm signing and alignment, and suggest a sensible path for tightening DMARC over time. Existing records are never replaced blindly.
No provider can honestly promise that. We can correct authentication, routing, server, application and policy problems and show you the evidence behind a failure, but the recipient's filter also weighs reputation, content, volume, engagement, complaints and its own rules.
Headers, SPF, DKIM, DMARC, the sending infrastructure, reverse DNS, the hostname, blocklist indicators, content patterns, sending behaviour and any feedback from the provider. How much improves depends on the cause and on the recipient's policy.
Yes. Submission, authentication, queues, routing, filters, DNS, TLS, resource limits, the logs, remote responses and mailbox configuration can all be inspected on any authorised, compatible server.
Yes. We follow the application event, whichever mail function or SMTP/API provider is in use, cron or queue processing, authentication, the server logs and the recipient's response. Order and customer workflows can be tested one at a time.
Yes. Mailboxes, the piping or import cron, SMTP, sender DNS, the WHMCS email activity log, templates and server logs are all in scope here. Broader WHMCS workflow failures are handled under our WHMCS Support service instead.
Yes. The exact SMTP response, the timestamp, the queue record, the sending IP or provider, the recipient domain and the headers together show whether this is policy, authentication, reputation, rate limiting, routing, mailbox state, or just a temporary problem at the other end.
Not before we know every legitimate sender and how each one aligns. A stricter policy is often the right destination once visibility and remediation are done, but jumping to reject with an incomplete sender list will block your own business mail.
The sending and receiving domains, roughly when it happened and in which timezone, which application or mailbox was used, the bounce text, the Message-ID or headers with personal lines removed, what you expected, what actually happened, and any recent DNS or platform change.
Yes. We support authorised domains and compatible mail paths at third-party providers. How far the investigation can go depends on access to provider logs, control over DNS, shared-hosting limits, and closed filtering systems we cannot see into.
Send the recipient domain, roughly when it happened, and the bounce text or headers. We will work out whether the failure belongs to submission, authentication, transport or the recipient's own filtering.