Sysadmin Generators - Cron, SPF, DMARC & DKIM

Cronjob

Generated Cron Expression:

* * * * *

SPF Record

TXT Record Value:

v=spf1 mx a ~all

DMARC Record

TXT Record Name: _dmarc TXT Record Value:

v=DMARC1; p=none; pct=100;

DKIM Record

1. Private Key (Save this to your Mail Server)

Click "Generate New Keys" to create a secure RSA key pair.
2. Public Key (Publish this to your DNS) TXT Record Name: default._domainkey TXT Record Value:

v=DKIM1; k=rsa; p=

Secure .htpasswd Generator

Bcrypt accepts passwords up to 72 UTF-8 bytes.
TXT Record Value:

Waiting for input...

301 Redirect Generator

TXT Record Value:

Please enter URLs to generate...
Server Surgeon - Server Management Experts

Sysadmin Generators: Cron, SPF & DMARC

This suite of IT generators helps system administrators quickly create secure .htpasswd files, complex Cronjob schedules, and essential DNS records (SPF, DKIM, DMARC) to protect domains against email spoofing and phishing.

What is a Cronjob Generator?

A cron generator helps you create the exact expression (e.g. 0 0 * * *) used on Linux servers to automate scripts and maintenance without needing to memorize the syntax.

Why generate SPF or DMARC records?

Writing DNS records manually can lead to syntax errors. Our generators ensure correct formatting so your domain is protected against email spoofing immediately.

How do I generate a DKIM record?

Generating DKIM requires a cryptographic key pair. The public key is added to DNS as a TXT record, while the server uses the private key for signing. Our generator formats the DNS string without errors.

What is an .htpasswd file used for?

It is used by Apache and Nginx web servers to password-protect directories. Our generator creates strongly hashed (Bcrypt) passwords needed for modern server security.

What does a redirect checker show?

It follows HTTP redirect responses such as 301, 302, 303, 307 and 308, then displays every hop, status code, Location header and final destination URL.

What is the difference between soft fail and hard fail in SPF?

Soft fail (~all) tells receiving servers that the email should be treated as suspicious but not automatically rejected. Hard fail (-all) instructs strict rejection, which is more secure but requires careful setup.

SPF checker Look up a domain's SPF TXT record and check for missing or duplicate records, with basic warnings about policy and DNS lookup mechanisms. DMARC checker Look up a domain's DMARC record and check for missing or duplicate records, policy settings and the presence of aggregate reporting. DKIM checker Look up a DKIM TXT record using a domain and selector, view the published record and check for missing records or basic public-key warnings. Redirect Checker & Migration Audit Trace HTTP redirects, inspect each status code and Location header, and find the final destination of a URL to troubleshoot redirect chains. Mail tester Send a test email to inspect SPF, DKIM, DMARC, reverse DNS, SpamAssassin results and blacklist checks in one deliverability report. HTTP headers Inspect HTTP response headers, status codes, security headers and Gzip or Brotli compression to troubleshoot your website configuration.