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3rd Party E-mail - Unable to Send Outgoing E-mail


3rd Party E-mail - Unable to Send Outgoing E-mail

To Whom It May Concern,


Our company is using a 3rd party e-mail server located in our headquarters overseas.  With our previous ISP, our e-mail settings were set on our e-mail POP3 (Port 110) and SMTP (Port 25) servers, and never had an issue with incoming and outgoing mail. 


Since switching to AT&T U-Verse (with no e-mail setting changes), we have been able to receive e-mails, however we cannot send out any e-mails.


We have tried to change the e-mail settings to the below (as read from other posts), but we still have no luck in getting our e-mails sent out.


SMTP Sever:

Outgoing Port:  465

Encryption Type:  SSL


Can you please kindly advise how we can fix this problem?  Thanks!



Message 1 of 2
ACE - Master

Re: 3rd Party E-mail - Unable to Send Outgoing E-mail

It would depend how your mail server overseas is set up as to how your pop 3 client needs to match up.  I know AT&T blocks port 25 on their network. 


So you have two options:


1) Call someone that handles your mail server overseas and see if they can do the ports as AT&T says to set them up, or

2) Call AT&T and get them to unblock port 25 for you.  They used to do this for people but not sure if they still do.

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*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 2 of 2
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