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Thread: External STMP Relay

  1. #1
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    Default External STMP Relay

    Hello,

    Sometimes I'm having problem with my email server IP which sometimes is classified as spammer.

    Can I use an external SMTP/Outbound relay to bounce emails?

    If yes, is it possible to my local domain not use this external relay so I can get internal mails delivered instantly?
    Last edited by andremta; 07-09-2009 at 02:49 AM.

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    (Sorry but I'm not advertising any service...)

    DynDNS.com - Services -- MailHop Outbound

    Will I have problems with no REVERSE DNS matching?

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    Why not use your upstream ISP mail server ?

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    Quote Originally Posted by uxbod View Post
    Why not use your upstream ISP mail server ?
    That could be an option! Will I have problems with no Reverse DNS matching?

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    Shouldn't do as your ISP should have the rDNS in place for their mail server

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    Quote Originally Posted by uxbod View Post
    Shouldn't do as your ISP should have the rDNS in place for their mail server
    Ok, I will try it. I think it might be the better option.

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    Quote Originally Posted by uxbod View Post
    Shouldn't do as your ISP should have the rDNS in place for their mail server
    What if my ISP do now allow relay without authentication?

  8. #8
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by andremta View Post
    What if my ISP do now allow relay without authentication?
    It's been mentioned in the forums once or twice.

    http://wiki.zimbra.com/index.php?tit...Authentication
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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    Quote Originally Posted by phoenix View Post
    It's been mentioned in the forums once or twice.

    Outgoing SMTP Authentication - Zimbra :: Wiki
    Thanks!

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    If I configure the Thunderbird to use directly my ISP SMTP (with no authentication nor security) it works!

    But... When I configure in Zimbra admin to relay at the same SMTP is does not!

    Jul 9 19:45:32 zimbra-box postfix/smtp[10843]: 4B84F23A003: to=<myemail@hotmail.com>, relay=mail.myisp.com[xxx.xxx.xxx.xxx]:25, delay=0.22, delays=0.01/0/0.11/0.09, dsn=5.7.1, status=bounced (host mail.myisp.com[xxx.xxx.xxx.xxx] said: 550 5.7.1 Unable to relay for myemail@hotmail.com (in reply to RCPT TO command))
    Why is this?

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