Member Avatar for PatrickM

Hi guys, we recently got an email account using our ISP domain. it's an account we want for several people to use to send mail using the SMTP server but receiving via the POP3 should be restricted to only one person. now the problem is the password is one. how can i configure for this to be effective? i hope my msg is clear!!!!!!!!!!!1

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  • Latest Post Latest Post by sis37

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Short expert summary and reliable fixes for 's setup: sharing one mailbox password so several people can send but only one person can receive is fragile and insecure. Client-side “workarounds” (as hinted) can stop POP clients temporarily but are easy to undo and can cause lost or batched delivery. The robust approach is to separate sending credentials from mailbox access on the server side.

Server-side options that work and scale:

  • Hosted/mail-platform solution: create a shared mailbox or delegate send-as/send-on-behalf privileges to each person instead of sharing the mailbox password. In Exchange/Office 365 this is a shared mailbox or delegated account; in Google Workspace use an SMTP relay or domain-level send-as configuration. A shared mailbox can be configured so it cannot be used to sign in for POP/IMAP, preventing unwanted receive access while allowing multiple users to send.
  • Local relay solution for small offices: run an internal SMTP relay (Postfix, hMailServer, IIS SMTP) that requires per-user authentication on the LAN and forwards outbound mail to the ISP using the single upstream credential. Clients submit to the relay with individual logins; only the primary operator keeps POP3 configured against the ISP mailbox. This gives separate auth for sending while keeping POP3 access controlled.

Practical notes and cautions:

  • Ask the ISP if they can provide an SMTP-only credential, an authenticated relay, or IP-based ACLs — many providers support these and it’s the simplest fix.
  • Do not share mailbox passwords; use TLS/STARTTLS and app-specific passwords where available.
  • Monitor SMTP/relay logs after changes to confirm authenticated sends are relayed and to detect abuse.

These approaches avoid brittle client hacks, keep auditing and access control clear, and let one person receive mail while several can legitimately send as the shared address.

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Member Avatar for zeroth

Assuming you use Outlook, you can go to accounts and under the advanced tab there is an entry for Port Number. This is not an elegant solution but the normal server port number for incoming POP3 is 110. If you enter 1, for example, then this user will still be able to send messages but will not be able to receive. If they ever set their port number correctly, however, all the messages will come at once.

The primary user's computer can then be set to capture all messages by having their Outlook set up with all the accounts and it will capture all the incoming mail.

zeroth

Member Avatar for sis37

i just want to share printer in LAN. the printer is setuped in a pc which is in the domain.

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