Ports for Ethernet/Mail (software or hardware)?

Discussion in 'Macintosh Computers' started by sotied, Dec 3, 2004.

  1. sotied macrumors regular

    Joined:
    Apr 12, 2003
    Location:
    Boston
    #1
    OK. This might be in the wrong category, but bear with me.

    I'm trying to send mail from Mail from an iBook on a work network. Gmail tells me to set up my ports as 587 and my ISP tells me to use port 25.

    Are these ports just random numbers or is there a real assignment for each port? I remember using port 80 for some email stuff in the past and now I'm sunk a world of 110, 25, 995, 587 and more.

    Any ideas??

    ALSO, I've already gotten great help from Munkle, so I want to give props for the advice that's gotten me this far.

    Jeff
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    Port 80 is almost always used for http. This list lists the "normal" usage of a lot of port numbers.
     
  3. Santiago macrumors regular

    Joined:
    Jun 14, 2002
    Location:
    Mountain View, California
    #3
    For mail, the relevant ports are:

    25 smtp
    110 pop3
    143 imap
    993 secure pop3 using TLS/SSL
    995 secure imap using TLS/SSL
     
  4. superbovine macrumors 68030

    superbovine

    Joined:
    Nov 7, 2003
    #4
    maybe ISP are blocking port 25 to external mail servers which means you can recieve mail but not send. gmail maybe using 587 to get around this problem.
     

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