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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.

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Why do we still have such small email attachment filesize restrictions?

What's the technical limitation preventing us, in the glorious year 2011, from emailing each other 1GB files? Or is it just the main email platforms dragging their feet? If I can set my inbox to grab headers only, and then full attachments if I want…
Drew
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Postfix: Recipient address rejected: User unknown in local recipient table

When I try to send an email on my postfix server to an address on the same domain (for example, if the server hostname is mail.example.com and I try to send an email to test@example.com), I get the following error in the log and the email is not…
Tai Squared
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How do I check a PTR record?

I need to check a PTR record to make sure that a script I have is sending emails which will actually be received by my users and not be incorrectly marked as spam. I understand that the ISP which owns the IP range has to set up the PTR record, but…
Daisetsu
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How to change "From:" field for emails from Cron?

I use remote SMTP via nullmailer and it requires set From field to the specific name, but cron set it as root@my.sweet.server.com. How could I change it to something like me@ya.ru?
Alexander Artemenko
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7 answers

Is it becoming impossible to be a small mail provider?

I operate a small mail server for my private emails, some friends who have websites and two NGOs. In total my server sends between 60 and 400 messages a day. Now a lot of these emails are personal mails, between two or more people who know each…
Stefan Seidel
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40
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3 answers

Postfix: "Connection timed out" on all outbound email

I've been attempting to setup mailing lists with GNU Mailman but it's been a complete disaster with tons of road blocks. Postfix is able to receive email but not send it back out at all, I've peeked in the log and this is what I found: Mar 30…
APott
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8 answers

Why Does hotmail still reject my emails?

I have a very strange problem with my emails being marked as spam by hotmail. I just have configured Postfix + Dovecot on my server and all works perfectly. I can Send/Receive emails. I only have problems with hotmail accounts, I do not understand…
Dail
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6 answers

Are SPF records legacy?

I am responsible for a domain which has an SPF record as recommended by various other services that send mail on this domain's behalf. When setting up Mailchimp, I was surprised to find no documentation on Mailchimp's recommended SPF setup. When I…
RomanSt
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Is using SOFTFAIL over FAIL in the SPF record considered best practice?

Or put another way, is using v=spf1 a mx ~all recommended over using v=spf1 a mx -all? The RFC does not appear to make any recommendations. My preference has always been to use FAIL, which causes problems to become apparent immediately. I find that…
Michael Kropat
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1 answer

Can you have an email address with only the top level domain as the domain part?

The question title pretty much contains the question by itself, but as an example: Instead of having an address like bob@example.com(where example is the sub-domain of the TLD com) could you have have an email address like sky@net, where the domain…
Zavior
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Changing the maximum mail size in Postfix

When sending large email to a new CentOS6 server running Postfix as the MTA, the following message is returned: tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further…
warren
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1 answer

How can e-mail be delivered to a domain without an MX record?

Somebody has 2 e-mail addresses: bob@domainname.com.br and bob@domainname.com . The DNS records for these domains look like this: domainname.com.br $ dig any domainname.com.br ;; ANSWER SECTION: domainname.com.br. 86179 IN SOA…
Lucas
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7 answers

How can I attract more Spammers hitting my Spam traps?

Currently I have a number or domains that are set up as Email Spam traps. So if I get mails on that domains I can be certain that it is ~100% Spam. I'm using this information to temporarily defer message delivery from spamming IPs on my real Email…
mailq
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postfix - how do you redirect all emails to one user, eg *@example.com → user@example.com

I'm using postfix for my email. I know I can use /etc/aliases and newaliases command to redirect certain email, eg I can redirect root@example.com to user@example.com by putting root: user in my /etc/aliases and then running newaliases. However I'd…
Amandasaurus
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Can postfix be set up to forward mail to multiple recipients

I have the following postfix virtual file: test@domain.com bob@me.com This correctly forwards all emails to test@domain.com to bob@me.com However I would like to forward these emails to bob2@me.com as well. I tried this change and it does not seem…
Sam Saffron
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