smtp outgoing port number

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3_postfix modify the mail server port number

The first line starting with no # In master. cf should be SMTP Inet n-n -- smtpdThis line indicates the SMTP process andSMTP 25/tcp mailSMTP 25/udp mailCounterpartAppend a row to the end and modify the previous name, as shown in figureSmtp2 Inet n--smtpd,After saving, add a server process port number in/etc/services, f

Common port number

port number/layer name Notes 1 Tcpmux TCP Port Service Multiplexing 5 Rje Remote Job Entry 7 Echo Echo Service 9 Discard Null Service for connection testing 11 Systat The system state used to enumerate the connected ports 13 Daytime

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