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Questions tagged [smtpd]

62 questions
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What is the exact meaning of "SASL authentication failure: incorrect digest response"

I followed Flurdy's how-to for setting up a mail server on ubuntu. I can receive mails and use squirrelmail to read and send emails. However, I can't send emails through my server using my email client (thunderbird). The mail.log shows: "SASL…
Sascha
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postfix rejects incoming mail / 450 error / hostname returns different ip

I'm trying to find why postfix rejected the incoming mail the line from mail.log is: NOQUEUE: reject: RCPT from unknown[xxx.xxx.xxx.1]: 450 4.7.1 Client host rejected: cannot find your hostname, [xxx.xxx.xxx.1]; from=…
Kuba Zygmunt
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Postfix mail size counting

If I'm right Postfix counts mail size with an attachment sent to multiple receivers as one big e-mail. Eg.: User sends mail with 8 MB attachment to two receivers. Postfix thinks it's 2 x 8 MB = 16 MB mail. And when message_size_limit is by default…
meridius
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smtp authentication on postfix mail server with slackware linux 13.1

I am failing to authenticate to the mysql mail database using saslauthd (cyrus-sasl2.1.23) thru pam-mysql. Below are some of the commands execute as well as the configurations root@xxxx:/# ps aux | grep saslauthd root 3443 0.0 0.0 34524 …
user80476
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Postfix/SMTPD Relay Access Denied when sending outside the network

I asked a very similar question some 4 or 5 months ago, but haven't tracked down a suitable answer. I decided to post a new question so that I can ... a) Post updated info b) post my most current postconf -n output When a user sends mail from inside…
David W
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Lean & mean, basic SMTP server, for use over a single domain, no fwd'ing

Looking for recommendation for a light-weight, SMTP server, with basic capabilities (will be run on port#25, with authentication but clear-channel), and it's use shall be limited to a particular (or a small set of) domain(s), i.e. mail to/from same…
icarus74
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Postfix advanced relaying config/control

How do I make Postfix only accept outbound mail from $mynetworks if the from is *@mydomain(s) ? To be clear (and differentiate from similar questions I found) I want to make postfix such that users in $mynetworks, not subject to usual relay…
sandroid
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Malformed BASE64 value in vmail_ssl.map.db

I'm using postfix in Ubuntu 20.04.5 . Here's my vmail_ssl.map file, with domain names redacted: mail.domain.org /etc/letsencrypt/live/mail.domain.org/privkey.pem /etc/letsencrypt/live/mail.domain.org/fullchain.pem mail.domain.net…
Valerica
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Postfix: getting 50 or more copies of the same email from specific senders

I have a Postfix (2.10.1) / Dovecot server running on Centos 7. From specific servers I get about 50 copies of the same email every weekend, I tried a wireshark but it uses STARTTLS so its all encrypted, so I turned on logging in postfix. Everything…
Jeremy
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Postfix ignores -o settings in master.cf

I'm configuring a Postfix with three services in master.cf. So far I learned from @anx (thank you so much!) that smtpd-based services in master.cf do not understand transport-related options. Only trivial-rewrite-based services support transport…
Joe
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Postfix rejects emails relayed from O365

I have to do a migration of Office 365 from Postfix with Sogo. My goal is to configure small hybrid of Office 365 with Postfix, a bit the same way you do with Exchange On-premises. Currently, postfix is a primary server with 1000 users and it sends…
MadBoy
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NOQUEUE: reject: RCPT from 451 4.3.5 Server configuration

Unfortunately after some changes on master.cf and main.cf in postfix I'm getting these errors when I try to send out a e-mail. root@mail:/etc/postfix# tail -f /var/log/syslog | grep "rene.brakus@gkri.hr" Jul 25 17:39:46 mail dovecot:…
Rene
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OpenBSD 6.5 /etc/mail/aliases correct format?

What is the correct entry format for an alias? Right now I have root: xxxx@somewebsite.com Running newaliases -f /etc/mail/aliases yields a syntax error. Are there examples in the manual page for aliases?
user460340
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Why my postfix server is connecting to outside IP constantly?

I've set up a VPS which is working fine. I'm using postfix server to send email using PHP. I was just checking the log files and I noticed that my server is getting a connecting request or connecting to a different host every 2-3 seconds. Is this a…
Vipin Yadav
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Spam from my Debian Stretch server - postfix

I have a huge problem with my Debian Stretch installation. Out of the blue one client email address started sending a huge amounts o spam. My server uses standard configuration. I installed it with ISPConfig, Postfix, Dovecot, Amavisd,…
Get Schwifty
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