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Prolateral offers primary and backup domain (DNS) services, with servers in key geographic locations providing the best service possible.

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Problem

Looking for a list of outgoing SMTP servers?

Solution

An outgoing SMTP mail server handles all outbound emails and delivers that email to its end destination (the incoming email server). ISPs (Internet Service Providers) and MSPs (Managed Service Providers) like us will publish their outgoing SMTP server information for their end-users.

We have complied a list of those servers below, but of course if there is one missing then please let us know.  There is an add button at the bottom of the page.

Although this page is focused on outgoing SMTP server information, where available we have added the icoming (POP3 and IMAP) details as well.

outMail is an outgoing SMTP relay service also known as an SMTP SmartHost service.

Outgoing Server

ServerProtocolPortNotes
mxXXXXX.smtp-engine.com SMTP 25 Auth, StartTLS, SSL
  SMTP 465 Auth, SSL
  SMTP 587 Auth, StartTLS, SSL
  SMTP 2525 Auth, StartTLS, SSL
  SMTP 8025 Auth, StartTLS, SSL

Notes

Of course we would put outMail at the top of the list when its our service ;-)

outMail has published SPF records, and supports DKIM signing. outMail is an authenticated service offering SMTP on ports 25, 465, 587, 2525 & 8025.

mxXXXXX is an assigned server, so you need to refer to your welcome documentation for the exact information or look it up in the management portal.

 

Looking for 1&1 (also known as 1and1, IONOS and Schlund) hosted email server settings?

Incoming Server

ServerProtocolPortNotes
pop.1and1.com POP3 995 SSL

Outgoing Server

ServerProtocolPortNotes
smtp.1and1.com SMTP 587 StartTLS

Looking for BT Connect hosted email server settings?

Incoming Server

ServerProtocolPortNotes
mail.btconnect.com POP3 110  

Outgoing Server

ServerProtocolPortNotes
mail.btconnect.com SMTP 25  

Looking for BT Openworld hosted email server settings?

Incoming Server

ServerProtocolPortNotes
mail.btopenworld.com POP3 110  

Outgoing Server

ServerProtocolPortNotes
mail.btopenworld.com SMTP 25  

Looking for BT Internet hosted email server settings?

Incoming Server

ServerProtocolPortNotes
mail.btinternet.com POP3 110  

Outgoing Server

ServerProtocolPortNotes
mail.btinternet.com SMTP 25  

Looking for GMail hosted email server settings?

Incoming Server

ServerProtocolPortNotes
pop.gmail.com POP3 995 SSL only

Outgoing Server

ServerProtocolPortNotes
smtp.gmail.com SMTP 465 SSL
smtp.gmail.com SMTP 587 Start TLS

Notes

GMail has published SPF records.

Looking for O2 UK hosted email server settings?

Incoming Server

ServerProtocolPortNotes
pop.o2.co.uk POP3 110  

Outgoing Server

ServerProtocolPortNotes
smtp.o2.co.uk SMTP 25  

Looking for Outlook.com (formerly Hotmail) hosted email server settings?

Incoming Server

ServerProtocolPortNotes
pop3.live.com POP3 995 SSL only

Outgoing Server

ServerProtocolPortNotes
smtp.live.com SMTP 587 StartTLS

Notes

Outlook.com (aka live.com and hotmail.com) has published SPF records.

Looking for Office 365 hosted Exchange email server settings?

Incoming Server

ServerProtocolPortNotes
outlook.office365.com POP3 995 SSL

Outgoing Server

ServerProtocolPortNotes
smtp.office365.com SMTP 587 StartTLS

Notes

Office 365 has published SPF records. By default POP3 or IMAP access isn't enabled. To enable these protocols you need to log into the WebAccess (OWA) and goto Settings -> Options -> Account -> My Account -> Settings for POP and IMAP access.

Office 365 is ideally suited to work with their Outlook365 client.

In order to use Office 365 you must first add several DNS entries for your domain name, this includes adding their published SPF record to your own SPF record.

Looking for Orange Mobile hosted email server settings?

Incoming Server

ServerProtocolPortNotes
pop.orange.co.uk POP3 110  

Outgoing Server

ServerProtocolPortNotes
smtp.orange.co.uk SMTP 25  

Below is NTLWorld's hosted email server settings.

Incoming Server

ServerProtocolPortNotes
pop.ntlworld.com POP3 995 SSL

Outgoing Server

ServerProtocolPortNotes
smtp.ntlworld.com SMTP 465 SSL

Below is Yahoo Mail's POP and SMTP email server settings.

Incoming Server

ServerProtocolPortNotes
pop.mail.yahoo.com POP3 995 SSL

Outgoing Server

ServerProtocolPortNotes
smtp.mail.yahoo.com SMTP 587 StartTLS

Notes

Yahoo has published SPF records.

Incoming Server

ServerProtocolPortNotes
plus.pop.mail.yahoo.com POP3 995 SSL

Outgoing Server

ServerProtocolPortNotes
plus.smtp.mail.yahoo.com SMTP 587 StartTLS

Notes

Yahoo has published SPF records.

Below is Yahoo UK hosted email server settings.

Incoming Server

ServerProtocolPortNotes
pop.mail.yahoo.co.uk POP3 995 SSL

Outgoing Server

ServerProtocolPortNotes
smtp.mail.yahoo.co.uk SMTP 587 StartTLS

Notes

Yahoo has published SPF records.

Not found the SMTP server you were looking for?

If you know the details of a server that is missing from the list and would like it added to the list then please click the "e;Add Server"e; button below.

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Disclaimer

The Origin of this information may be internal or external to Prolateral Consulting Ltd. Prolateral makes all reasonable efforts to verify this information. However, the information provided in this document is for your information only. Prolateral makes no explicit or implied claims to the validity of this information. Any trademarks referenced in this document are the property of their respective owners.