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28

For starters, everyone behind a common NAT gateway will be authorized to send mail as the client that initiated the POP before SMTP, as it just means "IP x.x.x.x has sucessfully authorized, they may send mail now" and all clients behind the NAT will appear with the same IP. Potentially, this might mean 1000s of completely random, unreleated users can use ...


14

I'm currently using the free hMailServer for SMTP, POP3, and IMAP. It has been pretty solid in the couple years that I've been using it. I've run it on Windows 2003 R2 and Windows 2008 Standard and Enterprise. I'm using SquirrelMail for webmail. This is PHP, but it wasn't that hard to setup. This is free as well. The best commercial experience that I had ...


14

POP3 is an older protocol. It was designed to transfer messages to a client for reading; that client would be some other computer. Once the message was transferred, it would (usually) be deleted on the server, although there is an option to keep a copy on the server at all times. IMAP is a newer protocol. It was designed to allow one or more clients to ...


11

You can install OpenSSL for Windows, and use it to connect to servers using SSL. Type this in the command line: openssl s_client -connect pop.gmail.com:995 By the way, Gmail's SMTP servers require authentication too (unless you're connecting from anotehr known mail server), so you'd better start with something simpler.


10

Mail Server Options If you can install and configure svn a web server and dns, you should not find it difficult at all to install your own mail server. Since you're going to go with Gnu Linux/Debian Lenny, I'd suggest using Postfix and Dovecot as your Mail Server Software. Postfix can handle your mail sending/recieving (smtp, tls etc.) Dovecot can manage ...


7

We use stunnel for Gmail's POP3S service, works like a charm. Here's a sample config: # stunnel.conf [pop3s] accept = LOCALPORT connect = SECURESERVER:PORT Then you point your CRM the LOCALPORT you define.


7

Can clarify what you mean by "handed" to an IMAP server? Are you trying to consolidate messages stored in several POP email accounts into one IMAP account? Is this a one time deal or ongoing? One-time deal: Use a desktop client like Thunderbird. Add each pop3 account in turn (you can give each one their own "inbox"), as well as the imap account. Download ...


6

In the general case, it is not possible to do what you are asking for. It is also explicitly discouraged in the standard governing Internet email. It might be possible in some specific scenarios, but those will be highly specific. (Likely depending on specific software in used, software configuration, etc.) The reason for this is that the email message ...


5

I'd seriously push for fighting the political battle to allow IMAP access to the Exchange system. IMAP and POP can be enabled on a per-account basis. Since this is a workflow item with a defined business application, there's definitely a purpose... I'd be more suspicious of a the long-term viability of a workaround solution or anything that adds more ...


5

Sure, you can do this -- Log in to each mailbox and scan for your competitor's names in the mail contents. You would probably be best off writing a script to do this (you don't tell us what OS or mail software you're using, but there are some good POP3 Perl modules you could use on pretty much any platform. Honestly you want to do this on the server rather ...


5

As shown in your graphic, no protocol that exists "between" SMTP and POP3. SMTP is responsible for moving the message from the sending computer to the recipient's mail server. If there are multiple servers involved in moving the message from the sender's server to the recipient's server, each one moves the message via the SMTP protocol. These in-between ...


5

If she hasn't purged the items in the "recover deleted items" folder, you can still get them back there. You can get to that by (in outlook 2003) right clicking the deleted items folder in her mailbox and selecting "Recover Deleted Items...". Although, I believe for this to work with Hard-Deleted items, you would have had to previously enabled Recover ...


5

Shortest answer No Short answer Get sources of dovecot, grok code edit and remove DELE command. Compile, install and be ready to "upgrade nightmare" Longer anser NEVER ignore and violate RFC, according to which DELE in POP3-session must delete message in spool. Tell boss to fund technical solution, because it give in future alot less headache and ...


5

POP3 is not part of postfix. Postfix is an MTA. I suggest you use dovecot as the pop3 server. There are plenty of guides on the internet http://rimuhosting.com/support/settingupemail.jsp?mta=postfix http://wiki.dovecot.org/HowTo/PostfixAndDovecotSASL


4

If you use a Unix/Linux solution (like Postfix/Dovecot), you could just use fetchmail or something like that to get the mails from the old server and inject it into the local mail system on the new one. All you would need is a list of usernames/passwords for the POP accounts on the old server.


4

my guess is that when you moved the messages the UIDL on the messages have changed. In POP what the client has seen is stored on the client, and it is done by UIDL. So if they have changed, then all of the clients are going to see the messages as new, and there isn't that much that you can do about it. (Save figure out how to make all the UIDLs of the ...


4

Does the new server have a different name and IP address? If so, then the clients don't believe it is the same server as before, and therefore, the email it contains aren't the same ones it already fetched. It is entirely up to the client whether to delete old mail from the server once it has fetched it, or to leave it on the server. If it is configured ...


4

No you should add the mail server to your SPF record. For example: mydomain.com. IN TXT "v=spf1 mx a a:mail.mydomain.com ?all" If mail.mydomain.com was an MX record for the domain, it would be covered by mx.


4

Switching the DNS record is by far the simplest and least invasive way of doing what you want to acheive, but be aware that it's not foolproof. Depending on how well behaved the clients DNS is, it may cache old records for an extended period of time. If a bit of downtime is acceptable, then set your TTL of your A record to a small value (say, 5-10 minutes). ...


4

Email Server management is the mind killer. Unless you have a need for privacy/secrecy then running a mail server is a PITA. Email is such a 99.99% required uptime service these days that losing email for one or more of your important accounts is potentialy catastrophic. That said, it's always worth having a spare domain name to use while learning new ...


4

Consider your need for: shared calendaring shared meeting room/resources shared contacts Active Directory integration If these features appeal to you, you may with to consider moving to an Exchange setup. You don't have to purchase/license Exchange and all the servers, however. There are a handful of good Exchange hosts out there that can really help ...


4

I would use fetchmail to download the mail to a server every few minutes then use dovecot to serve it up as POP3 or IMAP Both are relatively easy to configure.


4

Server 2008 does not include any built in features for POP or IMAP, the only mail component you get is the SMTP server available for IIS. There are a number of mail servers available for server 2008, unfortunately there aren't many that are open source. Free hMailServer - as you already said it does not offer a web mail interface, but you could use ...


4

It's not a one-liner, but you could copy chunks like this (in csh): foreach file (`ls | head -n 1000`) mv $file /tmp/new/dir end I'm not 100% sure that pipe will work with the number of files you've got, but it's worth a shot. Also, you might be able to do 500 at a time with this command, just change that 1000 to 500.


4

Thunderbird stores its mail folders as mbox files (see the Thunderbird FAQ). If you locate the file for the spam folder, you can train from it using the --mbox switch: sa-learn --spam --mbox /path/to/spam_mbox


4

This behaviour depends on the mail client, not the server itself. There should be an option in your mail client to put a copy of sent e-mails in the "Sent" folder.


3

Create a mailbox for each of those POP3 accounts. Use the POP3 connector to get the mail for those accounts. Give the necessary users "Full Access" permissions to those mailboxes. You might also want to give them "Send As" or "Send on Behalf Of" permissions.


3

As has been noted, your domain registrar likely can forward email for you. If you are sending email from your domain, you will want some basic email setup including an MX. Adding SPF, and DKIM signatures may increase your delivery success. You will want your MX to accept (and possibly forward) email sent to the sending address, as well as mail sent to ...


3

Move to new Service / their own domain. Have the current ISP setup a mail forward to the new email address, and hopefully an autoresponder that says something along the lines of 'In order to better serve you, we are now XXX@company. please update your address books'. Gmail has an option to pop into your old mail account on a schedule, other cloud services ...



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