SMTP problems (

Discussion in '3CX Phone System - General' started by mukkacow, Nov 1, 2017.

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  1. mukkacow

    Oct 26, 2017
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    I'm trying to set SMTP for outgoing e-mail. My e-mail provider is
    I have tried every port they have in settings but noway to get it working (21,25,80,587,465,443).
    I have found this post:
    It's confirmed that for Google hosted PBX we can't use external smtp on these ports ?
    Actually I'm using (it works on port 2525) but I would like to change using my mail provider

    I have also noticed that when i'm trying to save for example 3CX lose the port 587 and when I come back in the e-mail configuration menu I see only

    Thanks for help ;-)
  2. YiannisH_3CX

    YiannisH_3CX Support Team
    Staff Member 3CX Support

    May 10, 2016
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    Hello @mukkacow

    Please note that the port disappears because port 587 is the default ssl port of the PBX and you do not need to specify it. That's why it disappears when clicking ok. Regarding other ports please have a look at the end of the following guide where ports that are not allowed by google are specified.

    Hope this is useful
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