MailerZ Blog
Long-form setup and decision writing for custom-domain forwarding, Gmail send-as without Workspace, aliases, DNS, and authenticated SMTP. One job per article. No invented product claims.
Email Aliases
Map the addresses you print. Keep the inbox you already use. Hold unknown mail. Prove inbound from another mailbox before the footer changes.
best email alias service
Read the guideMigrations
Parallel config is aliases and proof, not two MX products. Cut once. Probe. Keep the old screenshot.
migrate email forwarding provider
Read the guideDeveloper & Website SMTP
smtp logging best practices: one MX set, leftover hosts gone, Gmail or Outlook as the store.
smtp logging best practices
Read the guideEmail Forwarding Fundamentals
SPF is the hop. DKIM is the signature. DMARC is alignment. Do not rewrite Header From to chase SPF.
email forwarding spf dkim dmarc
Read the guideSPF DKIM DMARC SRS ARC
Softfail is not reject. Classify it. SRS authorizes the hop. Header From stays the person.
spf softfail forwarding
Read the guideDNS Provider Guides
One MX owner. Delete leftovers. Blank or @, not both vendors. Probe.
godaddy mx record setup
Read the guideTroubleshooting & SMTP Codes
550 is permanent. Read the text. Unauthorized From is not a DNS mystery. Free has no send-as.
smtp 550 error
Read the guideSecurity & Abuse
One owner. Terminating dests. Hold unknowns. Delete dest bounce-back.
prevent email forwarding loop
Read the guideSMTP Send-as
Open the received copy. If From is Gmail or Microsoft, attach paid SMTP and pick the approved identity. Catch-all will not fix it.
custom from address not working
Read the guidePersonal Domains
Write one pattern. Probe it. Kill leaked strings. Catch-all is not a naming system.
personal email alias naming
Read the guideEmail Forwarding Fundamentals
A second SMTP transaction after MX accept. Header stays. Envelope may use SRS.
what is email forwarding
Read the guideDNS Provider Guides
Match dashboard bytes on the asked name. Theater NS verifies the wrong zone.
txt record verification mistakes
Read the guideMigrations
The sheet is the week. The MX cut is a minute. Dual MX loses mail.
migrate many email aliases
Read the guideBuyer Guides & Decision
Score leftover MX, From rewrite, logs, and limits. Brand comes last.
choose email forwarding provider
Read the guideDeliverability & Spam
Visible means Header From. SRS is envelope. Cut leftover rewrite hops. Then Reply goes to the author.
preserve original sender email forwarding
Read the guideAgency & Multi-domain
audit multiple domains mx records: one MX set, leftover hosts gone, Gmail or Outlook as the store.
audit multiple domains mx records
Read the guideSPF DKIM DMARC SRS ARC
DKIM is a DNS key plus a signature on mail you send. It is not inbound MX. Free has no send-as.
publish dkim smtp
Read the guideDeveloper & Website SMTP
One AUTH, one 250, delete the command. A for-loop is bulk.
test smtp linux swaks openssl
Read the guideDeliverability & Spam
Reputation follows Header From. The hop cannot wash a vendor Gmail already hates.
sender reputation email forwarding
Read the guideSecurity & Abuse
email support credential safety: one MX set, leftover hosts gone, Gmail or Outlook as the store.
email support credential safety
Read the guideDNS Provider Guides
NS first. Exclusive MX. Leftovers gone. Unique-subject probe.
custom domain email godaddy dns
Read the guideAgency & Multi-domain
client email domain onboarding: one MX set, leftover hosts gone, Gmail or Outlook as the store.
client email domain onboarding
Read the guideCost & Workspace Alternatives
Free proves the hop. Send-as and a longer store are paid. Do not paste SMTP on Free.
free custom domain email forwarding
Read the guideSPF DKIM DMARC SRS ARC
DMARC aligns to Header From. Change it and the author’s signature no longer counts. Do not call that SRS.
rewrite from breaks dkim dmarc
Read the guideDNS Provider Guides
cpanel email routing external mx: one MX set, leftover hosts gone, Gmail or Outlook as the store.
cpanel email routing external mx
Read the guide