milter-greylist segfaults after upgrading curl and restarting jail

Yesterday I upgraded ftp/curl in my 10.3-RELEASE-p20 mail jail to version 7.56.0. Today I noticed there was no security or daily run mail from the mail jail this morning, so I restarted the jail. Since then I have been unable to start mail/milter-greylist.

root@mailijail:~ # service milter-greylist restart
miltergreylist not running?
Starting miltergreylist.
Segmentation fault (core dumped)
/usr/local/etc/rc.d/milter-greylist: WARNING: failed to start miltergreylist

I have tried rebooting the whole server and forcing a re-install of mail/milter-greylist but this has made no difference.

What should I do now?
Thank you. I have now rebuilt it 3 times, twice without curl support and once with (alternating). With curl support it crashes, but without curl it runs.

So, it looks like it depended on whatever was changed in the security upgrade! I'm in touch with the maintainer, so I'll relay that news to him.

Not solved yet, but hopefully on the way.