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Questions tagged [email-server]

Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

A list of mail servers can be found on Wikipedia, though sendmail, Microsoft Exchange Server, Postfix, and Exim are the most popular email servers, which together control over 85% of market share for SMTP service.

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SMTP sent E-mail not copied to Sent Folder

I discovered that some (few) providers don't copy into the Sent folder those E-mails which are sent from mail clients through SMTP. They only copy them to the sent folder if you send them from their web interface, everything sent directly through…
user9948
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What are the effects of having the TLS certificate and private key in same file?

I have noticed that a number of different web and mail server software allow or require you to provide the TLS certificate (including server certificate, CA intermediate certificate, and CA root certificate) and private key in a single .pem…
user981178
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Dovecot (with Postfix) configuration has connection refused when accessing auth-userdb

...this was a hard one to describe in a title. This description should highlight the problem. Context I was following the Workaround.org tutorial to install a postfix, dovecot (plus some additional plugins) stack. Running on a Ubuntu 12.04 machine…
Adam
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dovecot-lmtp does not exist

I followed this guide on linode to setup dovecot and postfix mail server on my Ubuntu 12.04.2 LTS . The setup requires socket /var/spool/postfix/private/dovecot-lmtp to act as virtual transport. However, in my setup, this socket file doesn't exist…
He Shiming
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Verifying MTA for correct behavior with swaks

I'm looking for some advice, what I should to check at my brand new mail-server for it's correct behavior. /saying behavior, because it is working - just but want be sure than it is working correctly./ I don't want get blacklisted only because, for…
kobame
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Is there a way to pause mail delivery in Postfix (accumulate in queue)?

When using combination of Postfix/Dovecot, is there a way to tell smtp server (Postfix) not to store mails on disk but hold/add them to queue until "maintenance finished"? Useful for disk upgrades, volume extensions, chkdisk etc.
Alex
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Postfix unable to create lock file, permission denied

I thought I had my postfix configuration all set up on my Amazon Ubuntu server but I guess not. I'm trying to set up an admin email account for 3 virtually hosted Apache websites. Here's my postfix main.cf file: myhostname =…
John Bowlinger
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How to use two mail servers in parallel, if possible?

I basically want to have two separate email servers. The first one is the GoogleApps GMail service, which is for humans to use. The second server would be for sending messages from my application (so, send them programatically). Do I even need to…
omninonsense
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Does the MTA (Postfix, Exim, etc.) get installed seperate from the mail server

I'm new to mail servers and still trying to understand all the components. What I read is that there are many MTAs, but the 4 common ones are qmail, Postfix, Sendmail, and Exim. I also found this list of mail servers.…
sameold
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Why is SPF being validated against my mail server's IP instead of sender's IP?

I have a mail server "example.com" which forwards all emails with recipient "me@example.com" to "me@gmail.com". My mail server runs Postfix and it uses the virtual_alias_maps mechanism to perform the forwarding. I also have SPF records installed for…
Hongli Lai
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What are the typical methods used to scale up/out email storage servers?

What I've tried: I have two email storage architectures. Old and new. Old: courier-imapds on several (18+) 1TB-storage servers. If one of them show signs of running out of disk space, we migrate a few email accounts to another server. the servers…
nareshov
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saslauthd using too much memory

Woke up today to see my site slow/unresponsive. Pulled up top and it looks like a ton of saslauthd processes have spun up using about 64m of RAM each, causing the machine to enter swap space. I've never seen this many used on there. top - 16:54:13…
Brian Armstrong
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Fully FOSS EMail solution

I am looking at various FOSS options to build a robust EMail solution for a government funded university. Commercial options are to be chosen only in the worst case scenario. Here are the requirements: Approx 1000-1500 users - Postfix or Exim?…
Ravi
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Mail is not getting through to gmail

I have a self hosted mail server on a VPS. When sending mail through an application, most of my mail is getting rejected by google. Google is giving following message about the mail. Reporting-MTA: dns; mail.myclearmargin.com X-Postcow-Queue-ID:…
Alauddin Ahmed
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How can I create and update the existing SPF record to allow more than 10 entries?

How can I include another SPF record if my existing domain already has 10 lines of SPF records in the TXT record? I wanted to add these two: include:mailgun.org include:sendgrid.net This is my existing SPF record: v=spf1 a mx ptr…
Senior Systems Engineer
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