Re: Network error on destination MXs on MX that starts with "_"

2024-06-11 Thread Jesper Wallin
Hi Giovanni, This is indeed an invalid hostname. A hostname must begin with a digit or letter. (https://www.rfc-editor.org/rfc/rfc1123#page-13) Jesper Wallin On 6/11/24 2:57 PM, Giovanni Bechis wrote: Hi, recently I've found this error on my server: Jun 11 10:46:33 mx smtpd[97386

Change "524 5.2.4 Mailing list expansion problem" to "550 Invalid recipient"?

2024-05-14 Thread Jesper Wallin
Hi all, As discussed on IRC with Gilles, when using virtual table expansions or a .forward file and the lookup fail, smtpd will respond with: "524 5.2.4 Mailing list expansion problem", which I find vague and confusing. The reason for this was to make smtpd mimic the behaviour of sendmail and to

Re: OpenSMTPD 6.4 - "Invalid recipient" with external mail client (thunderbird)

2018-10-26 Thread Jesper Wallin
Hi, You need to specify “from any” to your relay_dkim match rule. If not specified, it defaults to “from local”, which now is different from “auth”. Regards, Jesper Wallin > On 27 Oct 2018, at 01:06, wrote: > > Hello, > > I recently upgraded my server to OpenBSD 6.4. But I