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Thread: Impossible to connect to Outlook 2010 with POP3 only

  1. #1
    mloisel is offline Junior Member
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    Default Impossible to connect to Outlook 2010 with POP3 only

    Hello everybody,

    I'am newbie with ZImbra and english too... lol
    I hope to respect all forum's rules.

    SO I installed ZIMBRA 7 on ubuntu.
    I can send email and receive from zimbra webmail to outgoing with no problem.
    I want to check outlook connection for all the client and I want to connect with POP3 only (without SSL)

    I know it's better but I can't for the moment.

    So In admin panel :
    MTA AGENT : auth enable is checked
    MTA AGENT : auth TLS ONLY is unchecked

    IN POP
    enable POP3 service is checked
    enable pop3S service is uncheckek
    password text clear is checked

    I try with pop3S enable or not but with out success

    My error message is :

    "unable to connect to server POP3; server has refused login. Please verify login for this account in account parameter. Server answer : -ERR invalid command"

    The login and password is ok. There is not login or password problem....
    I test with Thunderbird just for test and same problem....
    But in webmail all fine.

    I looking for during 3 days in zimbra forum , google, etc.. but no luck...There is certainly a parameter in ZIMBRA (maybe with ZMPROV) for enable a trick...

    I read too that enable proxy maybe resolved the issue but Phoenix say not need with one server and I have just one server.

    Thanks for your help that would be great appreciated

  2. #2
    raj's Avatar
    raj
    raj is offline Moderator
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    ok i know you have done the settings but try the following

    su - zimbra
    zmprov mcf zimbraImapCleartextLoginEnabled TRUE
    zmprov mcf zimbraPop3CleartextLoginEnabled TRUE
    zmprov mcf zimbraMtaTlsAuthOnly FALSE
    zmcontrol stop
    zmcontrol start
    PS: zimbra service restart is very imp
    This enables the CLAERTEXT login and enable SMTP-AUTH

    may be you are not doing SMTP-AUTHENTICATION settings in outlook properly.
    follow these instructions and see
    Outlook 2010 authenticated SMTP server (default SMTP port 25) setup.
    * step 5 and onwards is important

    Raj
    i2k2 Networks
    Dedicated & Shared Zimbra Hosting Provider

  3. #3
    mloisel is offline Junior Member
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    Hello RAJ,

    Thanks you for your help.

    I try the following as you said but no result.
    For Outlook, yes I am already configure this fine (I am knowing outlook beacause I used it with exchange actually )

    When I test outgoing all fine but POP3 and IMAP no...

    The error message is very strange, the zimbra server respond "cannot connect with username but the username is ok just the pop protocol problem...very strange....

    Thanks you

  4. #4
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by mloisel View Post
    When I test outgoing all fine but POP3 and IMAP no...
    The correct Submission port on your Zimbra server (and any other mail server) is 587 and you will require authentication to send mail through that port - modify Outlook to use that port.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    mloisel is offline Junior Member
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    hello phoenix...

    Sorry but I don't understand my problem is not for send email that already work... The problem is just pop3 or imap connection in outlook.

    SEND ok
    RECEIVE not ok

    But I keep your tip

    Thx

    It very strange that outlook cannot connect with prehistorik POP3 protocol....and must configur POP3S to work, I can't accpet it is not possible to configure only pop3..I check every where.. I find post that talk about my problem but no answer...or no solution....

    I am desesperate.... (not housewives lol).

  6. #6
    mloisel is offline Junior Member
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    arf there is a very very big problem.... no body are the same ? strange..
    I think ZIMBRA with outlook MUST BE CONFIGURED WITH SSL ONLY. Not ok with pop3 and imap (with oulook of course).

    If use Outlook, we must configure SSL. it's bad because pop3 is the most used protocol...

  7. #7
    dstuncer is offline Junior Member
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    I solved this problem :-) Disable POP-IMAP Proxy or use port 7110 for pop3.

  8. #8
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by dstuncer View Post
    I solved this problem :-) Disable POP-IMAP Proxy or use port 7110 for pop3.
    You shouldn't have the proxy (nor memcached) installed or enabled for a single server install, if that's what you have then search the forums for details on how to disable and remove it from your server.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  9. #9
    mloisel is offline Junior Member
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    Ok I will try this but now we are paid for certificate.
    SO We have proxy and memecached installed on the server. SO Phoenix can you explain why it's not a good configuration on only one server ?

    Thansk you for all !

  10. #10
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by mloisel View Post
    Ok I will try this but now we are paid for certificate.
    SO We have proxy and memecached installed on the server. SO Phoenix can you explain why it's not a good configuration on only one server ?
    The reasons have been mentioned several times in these forums but for a start it's not necessary and wastes RAM & CPU cycles.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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