权威例句
SMTP Service Extension for Message Size DeclarationSMTP Service Extension for Message Size DeclarationSMTP Service Extension for Message Size DeclarationMilitary Message Handling System (MMHS) over SMTP ProfileSMTP Submission Service Extension for Future Message ReleaseSMTP Service ExtensionsThe EuroBridge Platform - Support Of An EnhancedMultimedia Mail ServiceSMTP Service Extension for PrioritySMTP Service Extensions for Transmission of Large and Binary Message HeadersThe QUICKSTART SMTP service extension