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Questions tagged [email]

The server configuration of email, including POP3, SMTP, IMAP, and popular server software packages that control email.

The server configuration of email, including POP3, SMTP, IMAP, and popular server software packages that control email.

6589 questions
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How did spammer spoof emails with my google apps domain (it even has DKIM!)

I have been getting a lot of bounce-backs lately. I thought my google apps account has been compromised, but there is no activity on my apps account, and there is certainly no malicious user that I can see. Since the email is always send from some…
Sam
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Outlook Email Abuse - Guide for email etiquette?

I've spent a lot of time performing mail migrations for companies that either had very little IT focus, or no fulltime staff to handle common issues. As a result, policies governing email use and best-processes were never instituted. The end-users…
ewwhite
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A way for DNS record to say "this domain has no mail server"?

What is the appropriate way to set up a DNS record that says "this domain has no mail server"? I assume I need a special MX record to do this, otherwise it will be assumed that the A record is the answer. I ask this question because it seems like it…
700 Software
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UID uniqueness of IMAP mails

In our internal webmail system, we'd like to attach notes and contacts to certain mails. In order to do this, we have to keep track of every mail on our IMAP server. Unfortunately the IMAP standard doesn't enforce the uniqueness of the UID of a mail…
SecStone
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Looking for an open source email archiving application

I'm looking for an open source application that will archive my email. It might do this by logging in to my POP3 account on a regular basis and copying the emails across, or it might just read my Unix mbox/maildir file/directory directly on the mail…
Joel
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How to determine which user sent a specific email with postfix?

We have a postfix server that requires authentication to SMTP relay through it. We use virtual mailboxes in MySQL database. A message was relayed through our system, and we need to determine which one of our user accounts was used to send it. The…
Nick
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Does the presence of a Content-ID header in an email MIME mean that the attachment must be embedded?

Two different third-party email products we have are reacting differently to the presence of a content-id header in the MIME source of an email. This is resulting in an inconsistent user experience that we're trying to resolve. Here's an example:…
Mike B
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Not receiving mails from some senders due to DNS config

I have noticed a peculiar behavior of my google apps domain. Most of the mails come through as you would expect, but over a period of time I have come to the conclusion that mails from certain senders don't come through. After identifying one such…
Milo Wielondek
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Gmail rejects emails. Openspf.net fails the tests

I've got a problem with Gmail. It started after one of our trojan infected PCs sent spam for one day from our IP address. We've fixed the problem, but we got into 3 black lists. We've fixed that, too. But still every time we send an email to Gmail…
pablomedok
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What takes precedence: an SPF record with "-all" in the primary TXT record, or one in the "include" section?

Suppose I have a domain (company.com) with an SPF that looks like this: v=spf1 ip4:70.70.70.70 include:host.marketing.com -all and "host.marketing.com" looks like this v=spf1 ip4:8.8.8.8 ~all What takes precedence for company.com, the "~" or the…
makerofthings7
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how to disable remote wipe for Exchange 2010 ActiveSync?

When connecting android mobile devices to Exchange ActiveSync some require granting device administrator privileges which permit an exchange administrator to remotely wipe the phone. The warning messages are scaring some mobile users and turning…
Rory
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Delete from mailq where subject matches

I have a mailq which is getting backed up with multiple emails with the same subject line. I would like to delete all emails in the mailq that match a particular subject line so they don't get sent. Any ideas how to do this? Pretty urgent as its…
David
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How do I setup a SENT and TRASH folder with Dovecot?

The IMAP mailbox that Dovecot sets up has no SENT folder or TRASH folder. How do I set those up? Is there a way to place them outside of the INBOX hiearchy? I want to make sure that these folders work with the iPhone email client or any other mobile…
user18233
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Migrate live server

I'm in trouble, I have a running server with the usual services (httpd, mail, sql), and looks like I must be really fast to prevent total data loss (my RAID array failed, so I'm depending on a single hdd now). The whole system built on HowtoForge's…
fabrik
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smtp remote host responds "550 Sender verify failed"

A server I'm taking care of uses qmail for MTA. I can send and receive to almost every domain except one or two that give the following error, or something very similar: 550-Verification failed for 550-No Such User Here 550…
jfoucher
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