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is a command to investigate the smtp server.\n\n### Example\n\n#### Basic\n\n```\n$ smtping -s 3 -m 3 -d example.com user1 user2 user3\nSMTPING example.com: 10 message data bytes\nmail session=2 code=250 time=527 ms\nmail session=1 code=250 time=541 ms\nmail session=3 code=250 time=545 ms\nmail session=2 code=250 time=457 ms\nmail session=1 code=250 time=456 ms\nmail session=3 code=250 time=459 ms\nmail session=2 code=250 time=441 ms\nmail session=3 code=250 time=445 ms\nmail session=1 code=250 time=473 ms\nsession number=2 host=aspmx.l.example.com. pipe=true tls=true time=2115 ms\nsession number=3 host=aspmx.l.example.com. pipe=true tls=true time=2154 ms\nsession number=1 host=aspmx.l.example.com. pipe=true tls=true time=2161 ms\nsmtping time=2161 ms\n```\n\n#### Auth\n\n```\n$ smtping -auth -d example.com user\nSMTP Address \u003chostname:port\u003e: smtp.example.com:587\nUserName: user@example.com\nPassword:\nSMTPING example.com: 10 message data bytes\nmail session=1 code=250 time=1181 ms\nsession number=1 host=smtp.example.com pipe=true tls=true time=2410 ms\nsmtping time=2410 ms\n```\n\n### Synopsis\n\n```\nUsage: smtping [options] -d to_domain to_user...\n  -addr string\n        specify a to smtp address \u003chostname:port\u003e\n  -byte int\n        specify a number of data bytes (default 10)\n  -d string\n        specify a to domain\n  -detail\n        detailed output\n  -disable-pipe\n        disable to pipelining\n  -auth\n        enter authentication information\n  -from string\n        specify a envelope-from\n  -h    this help\n  -m int\n        specify a number of messages to send (default 1)\n  -s int\n        specify a number of cocurrent sessions (default 1)\n  -v    show version and exit\n```","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnissy%2Fsmtping","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fnissy%2Fsmtping","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fnissy%2Fsmtping/lists"}