Allow hostname to start with '@.' for namecheap. It fixes #3568
Allow hostname to start with '@.' for namecheap. It fixes #3568

phil-davis/pfsense,BlackstarGroup/pfsense,ptorsten/pfsense,brunostein/pfsense,NewEraCracker/pfsense,NOYB/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,ch1c4um/pfsense,ptorsten/pfsense,NOYB/pfsense,pfsense/pfsense,ptorsten/pfsense,ch1c4um/pfsense,jxmx/pfsense,ch1c4um/pfsense,dennypage/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,dennypage/pfsense,dennypage/pfsense,NOYB/pfsense,dennypage/pfsense,jxmx/pfsense,NewEraCracker/pfsense,brunostein/pfsense,phil-davis/pfsense,ch1c4um/pfsense,phil-davis/pfsense,brunostein/pfsense,pfsense/pfsense,pfsense/pfsense,BlackstarGroup/pfsense