Rackspace Email & Apps Blog

New alternate SMTP port: 8025

Wednesday, November 29th, 2006 at 10:05 pm in General by wboebel

Tonight we added a new alternate SMTP port for customers who are unable to use port 25, 465 or 587. The new port is 8025. This port functions exactly like 587 and will accept plain-text or TLS encrypted SMTP sessions, and requires SMTP Authentication.
fyi, 8025 is a somewhat standard alternate SMTP port, and was requested by several customers.
Enjoy!

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9 Responses to “New alternate SMTP port: 8025”

  1. Tim Hommer says:
    November 30, 2006 at 11:09 am

    could this be why that yesterday we lost the ability to send email we are getting the message
    : host mailstore1.secureserver.net[64.202.166.11] said:
    554 refused mailfrom because of SPF policy (in reply to MAIL FROM command)
    We do use the port 8025 for our vpn connection if that makes any sense to you.

  2. Bill Boebel says:
    November 30, 2006 at 11:45 am

    No, that looks like the recipient’s server is rejecting the message because your domain has an SPF record that does not permit mail to be sent from the SMTP server you are using. If you are indeed using a Webmail.us SMTP server (on any port) your SPF record should alias the SPF record for emailsrvr.com such as we do for webmail.us:
    webmail.us. IN TXT “v=spf1 include:emailsrvr.com ~all”
    Hope this helps.

  3. steve says:
    December 5, 2006 at 11:33 am

    SMTP is a problem for one of my clients.They are using a bellsouth DSL connection, and their outgoing is atrocious and unreliable.
    Can we use the webmail smtp reliably,
    by that i mean will outlook not be bothered on the bellsouth line and let webmail be the smtp?

  4. Bill Boebel says:
    December 5, 2006 at 11:42 am

    Your customers should be able to use our SMTP servers while connected to Bellsouth. To verify this, have them open a command prompt and telnet to our SMTP system on the alternate port:
    telnet smtp.emailsrvr.com 8025
    If you see our greeting, then they should have no problem using the Webmail SMTP system:
    220 relay3.r3.iad.emailsrvr.com ESMTP – VA Code Section 18.2-152.3:1 forbids use of this system for unsolicited bulk electronic mail (Spam)

  5. Aamir Raza says:
    May 4, 2007 at 12:38 am

    Why am I getting this error while connecting to webmail using Microsoft Outlook?
    220 relay6.relay.iad.emailsrvr.com ESMTP – VA Code Section 18.2-152.3:1
    use of this system for unsolicited bulk electronic mail (Spam)

  6. Bill Boebel says:
    May 4, 2007 at 6:41 am

    Thats not an error. That is the SMTP “welcome” message, which just warns spammers that they will be violating the law if they try to use our system.
    With the SMTP protocol, if the first number starts with a “2″ (as in “220″) it is a success response. If it starts with a “4″ or a “5″ it is an error.

  7. Sethu says:
    December 26, 2008 at 6:36 am

    Hi,
    We are new customer for mailtrust, we are hosted our mail server to mailtrust.com. we are using Firewall what is the port no we want to enable to allow web access.(webmail.mailtrust.com)
    reg.
    sethu.

  8. Phu Luc says:
    December 31, 2009 at 6:57 pm

    I don’t know how to use Email Configuration at RackSpace Email server here! Hi Buddy, someone can show me more here?

    what is the exact SMTP address and port number?

    what is the exact POP3 address and port number?

    I have created two email account at Rackspace here:
    special@vcl-estore.com and ebusiness@vcl-estore.com

  9. Cameron Nouri says:
    January 4, 2010 at 10:23 am

    @Phu — You can find all of our support information at our support website at http://www.rackspace.com/apps/support

    For easy reference though here is a link directly to the addresses you should be using for POP3 and SMTP access, including the port numbers.. http://www.rackspace.com/apps/support/portal/4266/941/943/1088

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