Email

1. Attachments

See https://www.extendoffice.com/documents/outlook/1379-outlook-remove-all-attachments.html.

2. IMAP

3. Information

Linux Servers

Hostname                Smarthost                       Port
TBHF-ANC-MRM            SMRU-SFW-MRM                    25
TBHF-ANC-MKT            SMRU-SFW-MKT                    25
TBHF-ANC-MLA            -                               -
TBHF-ANC-WPA            SMRU-SFW-WPA                    25
TBHF-ANC-MSL            SMRU-SFW-MSL                    25
TBHF-ANC-TST            SMRU-SFW-TST                    25
TBHF-OPS-MRM            SMRU-SFW-MRM                    25
TBHF-TST-MRM            SMRU-SFW-MRM                    25
TBHF-WEB-MRM            SMRU-SFW-MRM                    25

Sophos Firewalls

Hostname                Smarthost                       Port
SMRU-SFW-MRM            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-MKT            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-MLA            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-WPA            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-MSL            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-HPH            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-SKK            eu-smtp-outbound-1.mimecast.com 587
SMRU-SFW-MKU            -                               -
SMRU-SFW-MRH            -                               -
SMRU-SFW-TST            eu-smtp-outbound-1.mimecast.com 587

Zendto Servers

Hostname                Smarthost                       Port
TBHF-WEB-MRM            eu-smtp-outbound-1.mimecast.com 587

/opt/zendto/config/preferences.php.org:         'SMTPserver'    => 'mail.smtp2go.com', // If blank, will use PHP mail(). See above.
/opt/zendto/config/preferences.php.before-ad:   'SMTPserver'    => 'mail.smtp2go.com', // If blank, will use PHP mail(). See above.
/opt/zendto/config/preferences.php:

All SMRU computers with an Outlook or Thunderbird email client use an SMTP2Go account with password.

Following is a list of systems not using SMTP2Go, Instead they use the SMRU-SFW-MRM firewall/gateway:

Fuji DocuCentre II-3005 photocopier
TBHF-ANC-MRM ANC server
SMRU-APC01 APC UPS
SMRU-SRV: Password Expiration Notification scripts
SMRU-SRV: Symantec Backup Exec scripts

To test which systems use the SMRU-EFW-MRM firewall to get their email delivered turn off the SMTP password authentication on the firewall/gateway. The emails will get stuck in the postfix queue on the firewall. Check each stuck email to see where it was sent from.

Browse to https://10.10.1.170:10443.
Select Proxy | SMTP | Advanced.
Uncheck Choose authentication method | LOGIN.
Click Save.
Click Apply.
Select Logout.

Log in as root on SMRU-EFW-MRM.

tail -f /var/log/maillog        # Optional.
ls -alt --full-time /var/spool/postfix/deferred/*/* | wc -l
ls -alt --full-time /var/spool/postfix/deferred/*/*
vi /var/spool/postfix/deferred/D/DFD62E4004E
exit

Browse to https://10.10.1.170:10443.
Select Proxy | SMTP | Advanced.
Check Choose authentication method | LOGIN.
Click Save.
Click Apply.
Select Logout.

4. Email Ports

See https://www.howto-outlook.com/howto/accountsettings.htm#outlookcom-imap.

4.1. Google Gmail

IMAP:
Incoming:       Port 993 (SSL)          imap.gmail.com
Outgoing:       Port 587 (TLS)          smtp.gmail.com

4.2. Lonex

Note: Out of date

Incoming:       Port 110 (POP3) mail.lonex.com
Incoming:       Port 143 (IMAP) mail.lonex.com
Outgoing:       Port 25         mail.lonex.com

4.3. Microsoft Hotmail / Outlook.com

IMAP:
Incoming:       Port 993 (TLS)          outlook.office365.com
Outgoing:       Port 587 (STARTTLS)     smtp.office365.com

POP3:
Incoming:       Port 995 (TLS)          outlook.office365.com
Outgoing:       Port 587 (STARTTLS)     smtp.office365.com

4.4. SMTP2Go