Microsoft 365 Business Basic vs Standard vs Premium (2026)
Microsoft 365 Business Basic, Standard and Premium compared for admins: prices checked 7 October 2026, Entra ID, Intune, Defender, the 300-user cap and when E3/E5 fit.
October 7, 2026
Exim Log Cheat Sheet: exigrep, exiqgrep, eximstats and Log Flags
Exim log cheat sheet for cPanel and DirectAdmin: log locations, the arrival, delivery, bounce and defer flags, and exigrep, exiqgrep, exiqsumm, eximstats and exiwhat with real examples.
October 7, 2026
Exim “Retry Time Not Reached for Any Host”: Causes and Fix
What Exim "retry time not reached for any host" means, how to read the retry database with exinext and exim_dumpdb, and how to force delivery safely.
October 7, 2026
Dovecot “Too Many Open Files”: Fix on cPanel and DirectAdmin
Fix Dovecot "Too many open files" on cPanel and DirectAdmin: tell fd, process and inotify limits apart, check the live values and raise the right one safely.
October 7, 2026
Free MxToolbox Alternatives: Email and DNS Tools Compared (2026)
Free MxToolbox alternatives compared from their own pages (7 Oct 2026): dnschecker.org, EasyDMARC, PowerDMARC, dmarcian, mail-tester and more, plus which srvScripts tool covers each task.
October 6, 2026
cPanel Exim Queue Stuck: Flush, Thaw and Delete Frozen Mail
Inspect, flush, thaw and bulk-delete a stuck Exim queue on cPanel with exim -bp, exiqgrep and exim -Mrm, then find the script or mailbox that filled it.
October 6, 2026
SMTP Bounce Explainer: What Your Bounce Message Means
Paste a bounce or SMTP error and get the meaning of its status codes, the likely cause and the fix, including Gmail, Microsoft and Spamhaus messages.
October 6, 2026
Spamhaus 550 5.7.1 Blocked: Fix SBL, XBL, CSS, PBL and DBL
Fix Spamhaus 550 5.7.1 rejections: read the error, map return codes to SBL, CSS, XBL, PBL and DBL, check and delist correctly, and fix the server-side cause.
October 6, 2026
SPF Too Many DNS Lookups: Fix PermError and the 10-Lookup Limit
Fix SPF PermError "too many DNS lookups": what counts toward the 10-lookup and void-lookup limits, how to count includes, and safe fixes.
October 6, 2026
SPF Lookup Counter: Check the 10 DNS Lookup Limit
Count every DNS lookup in a domain's SPF record against the RFC 7208 limit of 10, find void lookups, duplicates and dead terms, and get a trimmed or minimally flattened record.
October 6, 2026
Find a DKIM Selector: Headers, Panel Defaults and Key Checks
Find a domain's DKIM selector from the DKIM-Signature header, the cPanel, DirectAdmin, Microsoft 365 and Google defaults, and check that the published key is valid.
October 6, 2026
Split a 2048-bit DKIM TXT Record Over 255 Characters
Split a 2048-bit DKIM TXT record over 255 characters correctly in cPanel, DirectAdmin, Cloudflare and BIND, with lab-tested commands to build and verify the strings.
October 6, 2026