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Outlook will not connect to my SSL IMAP email host on siteground.com

MSonic

We have a SG115W. 

Our host uses IMAP 993 and SMTP 495 - Outlook cant get to the mail isp. 

I can browse web just fine and SSL works fine on the browser. 

I can not get any emails through outlook. 

Our firewall log shows ports 993 and 495 being dropped. 

We cant seem to allow it in or out. 



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  • 0
    Check the web filtering and intrusion prevention logs (if using Web Filtering and/or IPS) to see if something related is being blocked or caught by a false positive, in which case you'll need to make appropriate exceptions. Most of the time, the solution is going to be based on what's in the applicable log(s).
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  • 0 in reply to Scott_Klassen

    I am having some issue with email that is racking my brain. 

     

    Recently a few pc's outlook stopped connecting to IMAP over 993.  The work over non ssl ports 143 just fine. 

    Outgoing SMTP connection 465 work just fine but IMAP 993 fails. The crazy thing is it is not on every users pc. 

    Other PC settings of IMAP 993 SSL and SMTP 465 work just fine. 

     

    Thanks in advance for any insight you can provide. 

  • 0 in reply to MSonic

    Mike, does doing #1 in Rulz shine any light on tis situation?

    Cheers - Bob

     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
  • 0 in reply to BAlfson

    We have resolved the issue. It was not a UTM problem. Sophos support used Tcpdump  to verify some internal host had incompatible IMAP SSL/TLS requirements that the mail host recently put in place without notifying customers. Changing mail client or upgrading host OS to Win 8 or 10 was the solution. Thank you for the assistance. 

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  • 0 in reply to BAlfson

    We have resolved the issue. It was not a UTM problem. Sophos support used Tcpdump  to verify some internal host had incompatible IMAP SSL/TLS requirements that the mail host recently put in place without notifying customers. Changing mail client or upgrading host OS to Win 8 or 10 was the solution. Thank you for the assistance. 

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